21122020110112 has 48 divisors (see below), whose sum is σ = 41901906977280. Its totient is φ = 10480474349568.

The previous prime is 21122020110049. The next prime is 21122020110133. The reversal of 21122020110112 is 21101102022112.

It is a super-2 number, since 2×21122020110112² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 11937 + ... + 6499552.

It is an arithmetic number, because the mean of its divisors is an integer number (872956395360).

Almost surely, 2^{21122020110112} is an apocalyptic number.

It is an amenable number.

21122020110112 is a deficient number, since it is larger than the sum of its proper divisors (20779886867168).

21122020110112 is a wasteful number, since it uses less digits than its factorization.

21122020110112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6512273 (or 6512265 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21122020110112 its reverse (21101102022112), we get a palindrome (42223122132224).

The spelling of 21122020110112 in words is "twenty-one trillion, one hundred twenty-two billion, twenty million, one hundred ten thousand, one hundred twelve".