520312021112 has 32 divisors (see below), whose sum is σ = 1050661038000. Its totient is φ = 240136925184.

The previous prime is 520312021093. The next prime is 520312021121. The reversal of 520312021112 is 211120213025.

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, 5438264 + ... + 5533112.

Almost surely, 2^520312021112 is an apocalyptic number.

520312021112 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

520312021112 is an abundant number, since it is smaller than the sum of its proper divisors (530349016888).

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

520312021112 is a wasteful number, since it uses less digits than its factorization.

520312021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147615 (or 147611 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 520312021112 its reverse (211120213025), we get a palindrome (731432234137).

The spelling of 520312021112 in words is "five hundred twenty billion, three hundred twelve million, twenty-one thousand, one hundred twelve".