213123023112020 has 96 divisors (see below), whose sum is σ = 528439929937920. Its totient is φ = 70654054677120.

The previous prime is 213123023112017. The next prime is 213123023112031. The reversal of 213123023112020 is 20211320321312.

It is a super-2 number, since 2×213123023112020² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15533630 + ... + 25836789.

It is an arithmetic number, because the mean of its divisors is an integer number (5504582603520).

Almost surely, 2^{213123023112020} is an apocalyptic number.

213123023112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213123023112020 is an abundant number, since it is smaller than the sum of its proper divisors (315316906825900).

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

213123023112020 is a wasteful number, since it uses less digits than its factorization.

213123023112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41371653 (or 41371651 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 213123023112020 its reverse (20211320321312), we get a palindrome (233334343433332).

The spelling of 213123023112020 in words is "two hundred thirteen trillion, one hundred twenty-three billion, twenty-three million, one hundred twelve thousand, twenty".