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2210202111220 = 2251012779139371
BaseRepresentation
bin100000001010011010010…
…011111100110011110100
321211021220210012111001121
4200022122103330303310
5242202443220024340
64411204113433324
7315452603653405
oct40123223746364
97737823174047
102210202111220
11782383521164
122b842826b844
131305623b6c3c
1478d8d8a59ac
153c75be3494a
hex2029a4fccf4

2210202111220 has 48 divisors (see below), whose sum is σ = 4687666857216. Its totient is φ = 875273840000.

The previous prime is 2210202111209. The next prime is 2210202111223. The reversal of 2210202111220 is 221112020122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2210202111194 and 2210202111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210202111223) 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, 56118135 + ... + 56157505.

It is an arithmetic number, because the mean of its divisors is an integer number (97659726192).

Almost surely, 22210202111220 is an apocalyptic number.

2210202111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2210202111220 is an abundant number, since it is smaller than the sum of its proper divisors (2477464745996).

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

2210202111220 is a wasteful number, since it uses less digits than its factorization.

2210202111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67272 (or 67270 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2210202111220 its reverse (221112020122), we get a palindrome (2431314131342).

The spelling of 2210202111220 in words is "two trillion, two hundred ten billion, two hundred two million, one hundred eleven thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 101 202 404 505 1010 2020 27791 39371 55582 78742 111164 138955 157484 196855 277910 393710 555820 787420 2806891 3976471 5613782 7952942 11227564 14034455 15905884 19882355 28068910 39764710 56137820 79529420 1094159461 2188318922 4376637844 5470797305 10941594610 21883189220 110510105561 221020211122 442040422244 552550527805 1105101055610 2210202111220