21122002111112 has 16 divisors (see below), whose sum is σ = 45261433095360. Its totient is φ = 9052286619024.

The previous prime is 21122002111109. The next prime is 21122002111163. The reversal of 21122002111112 is 21111120022112.

It is a super-2 number, since 2×21122002111112² (a number of 27 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 188589304508 + ... + 188589304619.

It is an arithmetic number, because the mean of its divisors is an integer number (2828839568460).

Almost surely, 2^{21122002111112} is an apocalyptic number.

It is an amenable number.

21122002111112 is an abundant number, since it is smaller than the sum of its proper divisors (24139430984248).

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

21122002111112 is a wasteful number, since it uses less digits than its factorization.

21122002111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377178609140 (or 377178609136 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21122002111112 its reverse (21111120022112), we get a palindrome (42233122133224).

The spelling of 21122002111112 in words is "twenty-one trillion, one hundred twenty-two billion, two million, one hundred eleven thousand, one hundred twelve".