201212220001931 has 2 divisors, whose sum is σ = 201212220001932. Its totient is φ = 201212220001930.

The previous prime is 201212220001927. The next prime is 201212220002011. The reversal of 201212220001931 is 139100022212102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201212220001931 - 2² = 201212220001927 is a prime.

It is a super-2 number, since 2×201212220001931² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201212220001931.

It is not a weakly prime, because it can be changed into another prime (201212220001031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100606110000965 + 100606110000966.

It is an arithmetic number, because the mean of its divisors is an integer number (100606110000966).

Almost surely, 2^{201212220001931} is an apocalyptic number.

201212220001931 is a deficient number, since it is larger than the sum of its proper divisors (1).

201212220001931 is an equidigital number, since it uses as much as digits as its factorization.

201212220001931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 201212220001931 in words is "two hundred one trillion, two hundred twelve billion, two hundred twenty million, one thousand, nine hundred thirty-one".