912192924221 has 2 divisors, whose sum is σ = 912192924222. Its totient is φ = 912192924220.

The previous prime is 912192924199. The next prime is 912192924257. The reversal of 912192924221 is 122429291219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 892665936100 + 19526988121 = 944810^2 + 139739^2 .

It is a cyclic number.

It is not a de Polignac number, because 912192924221 - 2¹⁰ = 912192923197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (912192924521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456096462110 + 456096462111.

It is an arithmetic number, because the mean of its divisors is an integer number (456096462111).

Almost surely, 2^912192924221 is an apocalyptic number.

It is an amenable number.

912192924221 is a deficient number, since it is larger than the sum of its proper divisors (1).

912192924221 is an equidigital number, since it uses as much as digits as its factorization.

912192924221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 44.

The spelling of 912192924221 in words is "nine hundred twelve billion, one hundred ninety-two million, nine hundred twenty-four thousand, two hundred twenty-one".