21113012214012 has 48 divisors (see below), whose sum is σ = 49281237008640. Its totient is φ = 7035165193728.

The previous prime is 21113012214011. The next prime is 21113012214029. The reversal of 21113012214012 is 21041221031112.

It is a super-2 number, since 2×21113012214012² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21113012214012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113012214011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 536074873 + ... + 536114255.

It is an arithmetic number, because the mean of its divisors is an integer number (1026692437680).

Almost surely, 2^{21113012214012} is an apocalyptic number.

It is an amenable number.

21113012214012 is an abundant number, since it is smaller than the sum of its proper divisors (28168224794628).

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

21113012214012 is a wasteful number, since it uses less digits than its factorization.

21113012214012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54162 (or 54160 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 21113012214012 its reverse (21041221031112), we get a palindrome (42154233245124).

The spelling of 21113012214012 in words is "twenty-one trillion, one hundred thirteen billion, twelve million, two hundred fourteen thousand, twelve".