21120102002012 has 48 divisors (see below), whose sum is σ = 40955802243552. Its totient is φ = 9469128364800.

The previous prime is 21120102001979. The next prime is 21120102002023. The reversal of 21120102002012 is 21020020102112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37658858 + ... + 38215569.

It is an arithmetic number, because the mean of its divisors is an integer number (853245880074).

Almost surely, 2^{21120102002012} is an apocalyptic number.

It is an amenable number.

21120102002012 is a deficient number, since it is larger than the sum of its proper divisors (19835700241540).

21120102002012 is a wasteful number, since it uses less digits than its factorization.

21120102002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75874598 (or 75874596 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21120102002012 its reverse (21020020102112), we get a palindrome (42140122104124).

The spelling of 21120102002012 in words is "twenty-one trillion, one hundred twenty billion, one hundred two million, two thousand, twelve".