21103132202112 has 32 divisors (see below), whose sum is σ = 56055194912880. Its totient is φ = 7034377400576.

The previous prime is 21103132202029. The next prime is 21103132202149. The reversal of 21103132202112 is 21120223130112.

It is a tau number, because it is divible by the number of its divisors (32).

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 3 ways as a sum of consecutive naturals, for example, 27478036338 + ... + 27478037105.

Almost surely, 2^{21103132202112} is an apocalyptic number.

It is an amenable number.

21103132202112 is an abundant number, since it is smaller than the sum of its proper divisors (34952062710768).

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

21103132202112 is an equidigital number, since it uses as much as digits as its factorization.

21103132202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54956073460 (or 54956073448 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21103132202112 its reverse (21120223130112), we get a palindrome (42223355332224).

The spelling of 21103132202112 in words is "twenty-one trillion, one hundred three billion, one hundred thirty-two million, two hundred two thousand, one hundred twelve".