331144220220 has 96 divisors (see below), whose sum is σ = 1044124010496. Its totient is φ = 77687788800.

The previous prime is 331144220207. The next prime is 331144220257. The reversal of 331144220220 is 22022441133.

It is a happy number.

It is a super-2 number, since 2×331144220220² (a number of 24 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, 8072019 + ... + 8112938.

It is an arithmetic number, because the mean of its divisors is an integer number (10876291776).

Almost surely, 2^331144220220 is an apocalyptic number.

331144220220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331144220220 is an abundant number, since it is smaller than the sum of its proper divisors (712979790276).

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

331144220220 is a wasteful number, since it uses less digits than its factorization.

331144220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16185011 (or 16185009 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 331144220220 its reverse (22022441133), we get a palindrome (353166661353).

The spelling of 331144220220 in words is "three hundred thirty-one billion, one hundred forty-four million, two hundred twenty thousand, two hundred twenty".