21310230122112 has 128 divisors (see below), whose sum is σ = 57443765544000. Its totient is φ = 6998918897664.

The previous prime is 21310230122039. The next prime is 21310230122141. The reversal of 21310230122112 is 21122103201312.

It is a tau number, because it is divible by the number of its divisors (128).

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 15 ways as a sum of consecutive naturals, for example, 6070068 + ... + 8914380.

Almost surely, 2^{21310230122112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21310230122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28721882772000).

21310230122112 is an abundant number, since it is smaller than the sum of its proper divisors (36133535421888).

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

21310230122112 is a wasteful number, since it uses less digits than its factorization.

21310230122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2844618 (or 2844606 counting only the distinct ones).

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

Adding to 21310230122112 its reverse (21122103201312), we get a palindrome (42432333323424).

The spelling of 21310230122112 in words is "twenty-one trillion, three hundred ten billion, two hundred thirty million, one hundred twenty-two thousand, one hundred twelve".