21121132202012 has 96 divisors (see below), whose sum is σ = 39395077263360. Its totient is φ = 9879883200000.

The previous prime is 21121132202003. The next prime is 21121132202039. The reversal of 21121132202012 is 21020223112112.

It is a super-2 number, since 2×21121132202012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8631438173 + ... + 8631440619.

It is an arithmetic number, because the mean of its divisors is an integer number (410365388160).

Almost surely, 2^{21121132202012} is an apocalyptic number.

It is an amenable number.

21121132202012 is a deficient number, since it is larger than the sum of its proper divisors (18273945061348).

21121132202012 is a wasteful number, since it uses less digits than its factorization.

21121132202012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5043 (or 5041 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21121132202012 its reverse (21020223112112), we get a palindrome (42141355314124).

The spelling of 21121132202012 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred thirty-two million, two hundred two thousand, twelve".