21122032112 has 20 divisors (see below), whose sum is σ = 40928890056. Its totient is φ = 10559737920.

The previous prime is 21122032111. The next prime is 21122032117. The reversal of 21122032112 is 21123022112.

It is a super-2 number, since 2×21122032112² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122032111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64343 + ... + 215369.

Almost surely, 2^21122032112 is an apocalyptic number.

It is an amenable number.

21122032112 is a deficient number, since it is larger than the sum of its proper divisors (19806857944).

21122032112 is a wasteful number, since it uses less digits than its factorization.

21122032112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159776 (or 159770 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21122032112 its reverse (21123022112), we get a palindrome (42245054224).

The spelling of 21122032112 in words is "twenty-one billion, one hundred twenty-two million, thirty-two thousand, one hundred twelve".