312001201220 has 48 divisors (see below), whose sum is σ = 656297510400. Its totient is φ = 124592073216.

The previous prime is 312001201217. The next prime is 312001201241. The reversal of 312001201220 is 22102100213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 312001201195 and 312001201204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48376556 + ... + 48383004.

It is an arithmetic number, because the mean of its divisors is an integer number (13672864800).

Almost surely, 2^312001201220 is an apocalyptic number.

It is an amenable number.

312001201220 is an abundant number, since it is smaller than the sum of its proper divisors (344296309180).

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

312001201220 is a wasteful number, since it uses less digits than its factorization.

312001201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10124 (or 10122 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 312001201220 its reverse (22102100213), we get a palindrome (334103301433).

The spelling of 312001201220 in words is "three hundred twelve billion, one million, two hundred one thousand, two hundred twenty".