312020022220 has 48 divisors (see below), whose sum is σ = 663435023328. Its totient is φ = 123253032960.

The previous prime is 312020022211. The next prime is 312020022233. The reversal of 312020022220 is 22220020213.

It is a junction number, because it is equal to n+sod(n) for n = 312020022194 and 312020022203.

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, 719899 + ... + 1068781.

It is an arithmetic number, because the mean of its divisors is an integer number (13821562986).

Almost surely, 2^312020022220 is an apocalyptic number.

It is an amenable number.

312020022220 is an abundant number, since it is smaller than the sum of its proper divisors (351415001108).

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

312020022220 is a wasteful number, since it uses less digits than its factorization.

312020022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349450 (or 349448 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 312020022220 its reverse (22220020213), we get a palindrome (334240042433).

The spelling of 312020022220 in words is "three hundred twelve billion, twenty million, twenty-two thousand, two hundred twenty".