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21100011222 = 2312372842901
BaseRepresentation
bin10011101001101010…
…001001111011010110
32000110111101121222010
4103221222021323112
5321203100324342
613405422245050
71344610064463
oct235152117326
960414347863
1021100011222
118a48451804
12410a426786
131cb3560754
14104242866a
1583760529c
hex4e9a89ed6

21100011222 has 16 divisors (see below), whose sum is σ = 42234152112. Its totient is φ = 7027648800.

The previous prime is 21100011221. The next prime is 21100011263. The reversal of 21100011222 is 22211000112.

It is a junction number, because it is equal to n+sod(n) for n = 21100011198 and 21100011207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100011221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1414029 + ... + 1428872.

It is an arithmetic number, because the mean of its divisors is an integer number (2639634507).

Almost surely, 221100011222 is an apocalyptic number.

21100011222 is an abundant number, since it is smaller than the sum of its proper divisors (21134140890).

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

21100011222 is a wasteful number, since it uses less digits than its factorization.

21100011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2844143.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21100011222 its reverse (22211000112), we get a palindrome (43311011334).

It can be divided in two parts, 211000112 and 22, that multiplied together give a palindrome (4642002464).

The spelling of 21100011222 in words is "twenty-one billion, one hundred million, eleven thousand, two hundred twenty-two".

Divisors: 1 2 3 6 1237 2474 3711 7422 2842901 5685802 8528703 17057406 3516668537 7033337074 10550005611 21100011222