21122122113112 has 32 divisors (see below), whose sum is σ = 40010081706000. Its totient is φ = 10452840112000.

The previous prime is 21122122113101. The next prime is 21122122113143. The reversal of 21122122113112 is 21131122122112.

It is a super-2 number, since 2×21122122113112² (a number of 27 digits) contains 22 as substring.

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, 2256862 + ... + 6880237.

Almost surely, 2^{21122122113112} is an apocalyptic number.

It is an amenable number.

21122122113112 is a deficient number, since it is larger than the sum of its proper divisors (18887959592888).

21122122113112 is a wasteful number, since it uses less digits than its factorization.

21122122113112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9140067 (or 9140063 counting only the distinct ones).

The product of its digits is 192, while the sum is 22.

Adding to 21122122113112 its reverse (21131122122112), we get a palindrome (42253244235224).

The spelling of 21122122113112 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred thirteen thousand, one hundred twelve".