212312202961 has 2 divisors, whose sum is σ = 212312202962. Its totient is φ = 212312202960.

The previous prime is 212312202953. The next prime is 212312203009. The reversal of 212312202961 is 169202213212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154385340561 + 57926862400 = 392919^2 + 240680^2 .

It is a cyclic number.

It is not a de Polignac number, because 212312202961 - 2³ = 212312202953 is a prime.

It is not a weakly prime, because it can be changed into another prime (212312202941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106156101480 + 106156101481.

It is an arithmetic number, because the mean of its divisors is an integer number (106156101481).

Almost surely, 2^212312202961 is an apocalyptic number.

It is an amenable number.

212312202961 is a deficient number, since it is larger than the sum of its proper divisors (1).

212312202961 is an equidigital number, since it uses as much as digits as its factorization.

212312202961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 212312202961 in words is "two hundred twelve billion, three hundred twelve million, two hundred two thousand, nine hundred sixty-one".