213021230122320 has 80 divisors (see below), whose sum is σ = 666904088835072. Its totient is φ = 56243229068800.

The previous prime is 213021230122273. The next prime is 213021230122333. The reversal of 213021230122320 is 23221032120312.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 4393978032 + ... + 4394026511.

Almost surely, 2^{213021230122320} is an apocalyptic number.

213021230122320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213021230122320 is an abundant number, since it is smaller than the sum of its proper divisors (453882858712752).

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

213021230122320 is a wasteful number, since it uses less digits than its factorization.

213021230122320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8788004660 (or 8788004654 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 213021230122320 its reverse (23221032120312), we get a palindrome (236242262242632).

The spelling of 213021230122320 in words is "two hundred thirteen trillion, twenty-one billion, two hundred thirty million, one hundred twenty-two thousand, three hundred twenty".