10021312120 has 64 divisors (see below), whose sum is σ = 23768388000. Its totient is φ = 3792158208.

The previous prime is 10021312109. The next prime is 10021312193. The reversal of 10021312120 is 2121312001.

It is a self number, because there is not a number n which added to its sum of digits gives 10021312120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 548086 + ... + 566074.

Almost surely, 2^10021312120 is an apocalyptic number.

10021312120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10021312120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11884194000).

10021312120 is an abundant number, since it is smaller than the sum of its proper divisors (13747075880).

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

10021312120 is a wasteful number, since it uses less digits than its factorization.

10021312120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18752 (or 18748 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10021312120 its reverse (2121312001), we get a palindrome (12142624121).

The spelling of 10021312120 in words is "ten billion, twenty-one million, three hundred twelve thousand, one hundred twenty".