212200999931 has 2 divisors, whose sum is σ = 212200999932. Its totient is φ = 212200999930.

The previous prime is 212200999861. The next prime is 212201000017. The reversal of 212200999931 is 139999002212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212200999931 is a prime.

It is a super-2 number, since 2×212200999931² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212200999531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106100499965 + 106100499966.

It is an arithmetic number, because the mean of its divisors is an integer number (106100499966).

Almost surely, 2^212200999931 is an apocalyptic number.

212200999931 is a deficient number, since it is larger than the sum of its proper divisors (1).

212200999931 is an equidigital number, since it uses as much as digits as its factorization.

212200999931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 47.

The spelling of 212200999931 in words is "two hundred twelve billion, two hundred million, nine hundred ninety-nine thousand, nine hundred thirty-one".