21022122011112 has 48 divisors (see below), whose sum is σ = 56966145575040. Its totient is φ = 7003530090528.

The previous prime is 21022122011081. The next prime is 21022122011119. The reversal of 21022122011112 is 21111022122012.

21022122011112 is a `hidden beast` number, since 210 + 221 + 220 + 1 + 1 + 1 + 12 = 666.

It is a super-2 number, since 2×21022122011112² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21022122011119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79949358 + ... + 80211869.

It is an arithmetic number, because the mean of its divisors is an integer number (1186794699480).

Almost surely, 2^{21022122011112} is an apocalyptic number.

It is an amenable number.

21022122011112 is an abundant number, since it is smaller than the sum of its proper divisors (35944023563928).

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

21022122011112 is a wasteful number, since it uses less digits than its factorization.

21022122011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160163062 (or 160163055 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 21022122011112 its reverse (21111022122012), we get a palindrome (42133144133124).

The spelling of 21022122011112 in words is "twenty-one trillion, twenty-two billion, one hundred twenty-two million, eleven thousand, one hundred twelve".