213021012320 has 48 divisors (see below), whose sum is σ = 503893888848. Its totient is φ = 85101442560.

The previous prime is 213021012317. The next prime is 213021012341. The reversal of 213021012320 is 23210120312.

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, 707726 + ... + 962765.

It is an arithmetic number, because the mean of its divisors is an integer number (10497789351).

Almost surely, 2^213021012320 is an apocalyptic number.

213021012320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213021012320 is an abundant number, since it is smaller than the sum of its proper divisors (290872876528).

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

213021012320 is a wasteful number, since it uses less digits than its factorization.

213021012320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671303 (or 1671295 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 213021012320 its reverse (23210120312), we get a palindrome (236231132632).

The spelling of 213021012320 in words is "two hundred thirteen billion, twenty-one million, twelve thousand, three hundred twenty".