21120130320312 has 32 divisors (see below), whose sum is σ = 53001087511680. Its totient is φ = 7013275212000.

The previous prime is 21120130320299. The next prime is 21120130320337. The reversal of 21120130320312 is 21302303102112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1673007814 + ... + 1673020437.

It is an arithmetic number, because the mean of its divisors is an integer number (1656283984740).

Almost surely, 2^{21120130320312} is an apocalyptic number.

It is an amenable number.

21120130320312 is an abundant number, since it is smaller than the sum of its proper divisors (31880957191368).

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

21120130320312 is a wasteful number, since it uses less digits than its factorization.

21120130320312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346028523 (or 3346028519 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21120130320312 its reverse (21302303102112), we get a palindrome (42422433422424).

The spelling of 21120130320312 in words is "twenty-one trillion, one hundred twenty billion, one hundred thirty million, three hundred twenty thousand, three hundred twelve".