312100330120220 has 48 divisors (see below), whose sum is σ = 657436792789728. Its totient is φ = 124454788243200.

The previous prime is 312100330120219. The next prime is 312100330120261. The reversal of 312100330120220 is 22021033001213.

It is a super-2 number, since 2×312100330120220² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 312100330120192 and 312100330120201.

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, 9510506 + ... + 26732945.

It is an arithmetic number, because the mean of its divisors is an integer number (13696599849786).

Almost surely, 2^{312100330120220} is an apocalyptic number.

It is an amenable number.

312100330120220 is an abundant number, since it is smaller than the sum of its proper divisors (345336462669508).

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

312100330120220 is a wasteful number, since it uses less digits than its factorization.

312100330120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36244790 (or 36244788 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 312100330120220 its reverse (22021033001213), we get a palindrome (334121363121433).

The spelling of 312100330120220 in words is "three hundred twelve trillion, one hundred billion, three hundred thirty million, one hundred twenty thousand, two hundred twenty".