912011122100 has 144 divisors (see below), whose sum is σ = 2166529041600. Its totient is φ = 331192350720.

The previous prime is 912011122091. The next prime is 912011122129. The reversal of 912011122100 is 1221110219.

It is a super-2 number, since 2×912011122100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57390956 + ... + 57406844.

Almost surely, 2^912011122100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 912011122100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1083264520800).

912011122100 is an abundant number, since it is smaller than the sum of its proper divisors (1254517919500).

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

912011122100 is a wasteful number, since it uses less digits than its factorization.

912011122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16642 (or 16635 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 912011122100 its reverse (1221110219), we get a palindrome (913232232319).

The spelling of 912011122100 in words is "nine hundred twelve billion, eleven million, one hundred twenty-two thousand, one hundred".