22011102012 has 24 divisors (see below), whose sum is σ = 51378541312. Its totient is φ = 7334276400.

The previous prime is 22011101963. The next prime is 22011102059. The reversal of 22011102012 is 21020111022.

It is a super-2 number, since 2×22011102012² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311314 + ... + 375417.

Almost surely, 2^22011102012 is an apocalyptic number.

It is an amenable number.

22011102012 is an abundant number, since it is smaller than the sum of its proper divisors (29367439300).

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

22011102012 is a wasteful number, since it uses less digits than its factorization.

22011102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689409 (or 689407 counting only the distinct ones).

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

Adding to 22011102012 its reverse (21020111022), we get a palindrome (43031213034).

The spelling of 22011102012 in words is "twenty-two billion, eleven million, one hundred two thousand, twelve".