312201020220 has 24 divisors (see below), whose sum is σ = 874162856784. Its totient is φ = 83253605376.

The previous prime is 312201020213. The next prime is 312201020273. The reversal of 312201020220 is 22020102213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 312201020220.

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, 2601675109 + ... + 2601675228.

It is an arithmetic number, because the mean of its divisors is an integer number (36423452366).

Almost surely, 2^312201020220 is an apocalyptic number.

312201020220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312201020220 is an abundant number, since it is smaller than the sum of its proper divisors (561961836564).

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

312201020220 is a wasteful number, since it uses less digits than its factorization.

312201020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5203350349 (or 5203350347 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 312201020220 its reverse (22020102213), we get a palindrome (334221122433).

The spelling of 312201020220 in words is "three hundred twelve billion, two hundred one million, twenty thousand, two hundred twenty".