1222460155921 has 2 divisors, whose sum is σ = 1222460155922. Its totient is φ = 1222460155920.

The previous prime is 1222460155817. The next prime is 1222460155927. The reversal of 1222460155921 is 1295510642221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1040728465921 + 181731690000 = 1020161^2 + 426300^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222460155921 - 2¹⁹ = 1222459631633 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222460155927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611230077960 + 611230077961.

It is an arithmetic number, because the mean of its divisors is an integer number (611230077961).

Almost surely, 2^{1222460155921} is an apocalyptic number.

It is an amenable number.

1222460155921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222460155921 is an equidigital number, since it uses as much as digits as its factorization.

1222460155921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 1222460155921 in words is "one trillion, two hundred twenty-two billion, four hundred sixty million, one hundred fifty-five thousand, nine hundred twenty-one".