12210212220961 has 2 divisors, whose sum is σ = 12210212220962. Its totient is φ = 12210212220960.

The previous prime is 12210212220919. The next prime is 12210212221021. The reversal of 12210212220961 is 16902221201221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12067071065361 + 143141155600 = 3473769^2 + 378340^2 .

It is a cyclic number.

It is not a de Polignac number, because 12210212220961 - 2¹⁹ = 12210211696673 is a prime.

It is not a weakly prime, because it can be changed into another prime (12210212230961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105106110480 + 6105106110481.

It is an arithmetic number, because the mean of its divisors is an integer number (6105106110481).

Almost surely, 2^{12210212220961} is an apocalyptic number.

It is an amenable number.

12210212220961 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210212220961 is an equidigital number, since it uses as much as digits as its factorization.

12210212220961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 12210212220961 in words is "twelve trillion, two hundred ten billion, two hundred twelve million, two hundred twenty thousand, nine hundred sixty-one".