2231212013220 has 24 divisors (see below), whose sum is σ = 6247393637184. Its totient is φ = 594989870176.

The previous prime is 2231212013179. The next prime is 2231212013231. The reversal of 2231212013220 is 223102121322.

It is a super-3 number, since 3×2231212013220³ (a number of 38 digits) contains 333 as substring.

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, 18593433384 + ... + 18593433503.

It is an arithmetic number, because the mean of its divisors is an integer number (260308068216).

Almost surely, 2^{2231212013220} is an apocalyptic number.

2231212013220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231212013220 is an abundant number, since it is smaller than the sum of its proper divisors (4016181623964).

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

2231212013220 is a wasteful number, since it uses less digits than its factorization.

2231212013220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37186866899 (or 37186866897 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2231212013220 its reverse (223102121322), we get a palindrome (2454314134542).

The spelling of 2231212013220 in words is "two trillion, two hundred thirty-one billion, two hundred twelve million, thirteen thousand, two hundred twenty".