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11331211131220 = 22510116733589883
BaseRepresentation
bin1010010011100100000011…
…0100000111100101010100
31111010020211120211110010111
42210321000310013211110
52441122310022144340
640033253031332404
72246436655303441
oct244710064074524
944106746743114
1011331211131220
1136795a3309032
121330093821104
136426b4508936
142b260d90c9c8
15149b3de7aaea
hexa4e40d07954

11331211131220 has 48 divisors (see below), whose sum is σ = 24175042593408. Its totient is φ = 4460736329600.

The previous prime is 11331211131187. The next prime is 11331211131221. The reversal of 11331211131220 is 2213111213311.

It is a junction number, because it is equal to n+sod(n) for n = 11331211131191 and 11331211131200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331211131221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16457602 + ... + 17132281.

It is an arithmetic number, because the mean of its divisors is an integer number (503646720696).

Almost surely, 211331211131220 is an apocalyptic number.

11331211131220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11331211131220 is an abundant number, since it is smaller than the sum of its proper divisors (12843831462188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11331211131220 is a wasteful number, since it uses less digits than its factorization.

11331211131220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33590160 (or 33590158 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 11331211131220 its reverse (2213111213311), we get a palindrome (13544322344531).

The spelling of 11331211131220 in words is "eleven trillion, three hundred thirty-one billion, two hundred eleven million, one hundred thirty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 101 167 202 334 404 505 668 835 1010 1670 2020 3340 16867 33734 67468 84335 168670 337340 33589883 67179766 134359532 167949415 335898830 671797660 3392578183 5609510461 6785156366 11219020922 13570312732 16962890915 22438041844 28047552305 33925781830 56095104610 67851563660 112190209220 566560556561 1133121113122 2266242226244 2832802782805 5665605565610 11331211131220