212464864013 has 2 divisors, whose sum is σ = 212464864014. Its totient is φ = 212464864012.

The previous prime is 212464863979. The next prime is 212464864049. The reversal of 212464864013 is 310468464212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159243296809 + 53221567204 = 399053^2 + 230698^2 .

It is a cyclic number.

It is not a de Polignac number, because 212464864013 - 2²⁰ = 212463815437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212464866013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106232432006 + 106232432007.

It is an arithmetic number, because the mean of its divisors is an integer number (106232432007).

Almost surely, 2^212464864013 is an apocalyptic number.

It is an amenable number.

212464864013 is a deficient number, since it is larger than the sum of its proper divisors (1).

212464864013 is an equidigital number, since it uses as much as digits as its factorization.

212464864013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 41.

The spelling of 212464864013 in words is "two hundred twelve billion, four hundred sixty-four million, eight hundred sixty-four thousand, thirteen".