22100121102012 has 72 divisors (see below), whose sum is σ = 52784615068416. Its totient is φ = 7193509587936.

The previous prime is 22100121101957. The next prime is 22100121102043. The reversal of 22100121102012 is 21020112100122.

It is a junction number, because it is equal to n+sod(n) for n = 22100121101982 and 22100121102000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108592983 + ... + 108796305.

It is an arithmetic number, because the mean of its divisors is an integer number (733119653728).

Almost surely, 2^{22100121102012} is an apocalyptic number.

It is an amenable number.

22100121102012 is an abundant number, since it is smaller than the sum of its proper divisors (30684493966404).

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

22100121102012 is a wasteful number, since it uses less digits than its factorization.

22100121102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204255 (or 203814 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22100121102012 its reverse (21020112100122), we get a palindrome (43120233202134).

The spelling of 22100121102012 in words is "twenty-two trillion, one hundred billion, one hundred twenty-one million, one hundred two thousand, twelve".