212956320329 has 2 divisors, whose sum is σ = 212956320330. Its totient is φ = 212956320328.

The previous prime is 212956320299. The next prime is 212956320431. The reversal of 212956320329 is 923023659212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129400636729 + 83555683600 = 359723^2 + 289060^2 .

It is a cyclic number.

It is not a de Polignac number, because 212956320329 - 2²⁸ = 212687884873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212956320329.

It is not a weakly prime, because it can be changed into another prime (212956320229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106478160164 + 106478160165.

It is an arithmetic number, because the mean of its divisors is an integer number (106478160165).

Almost surely, 2^212956320329 is an apocalyptic number.

It is an amenable number.

212956320329 is a deficient number, since it is larger than the sum of its proper divisors (1).

212956320329 is an equidigital number, since it uses as much as digits as its factorization.

212956320329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 44.

The spelling of 212956320329 in words is "two hundred twelve billion, nine hundred fifty-six million, three hundred twenty thousand, three hundred twenty-nine".