1222997026729 has 2 divisors, whose sum is σ = 1222997026730. Its totient is φ = 1222997026728.

The previous prime is 1222997026711. The next prime is 1222997026739. The reversal of 1222997026729 is 9276207992221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 812594073600 + 410402953129 = 901440^2 + 640627^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222997026729 - 2²⁹ = 1222460155817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222997026739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611498513364 + 611498513365.

It is an arithmetic number, because the mean of its divisors is an integer number (611498513365).

Almost surely, 2^{1222997026729} is an apocalyptic number.

It is an amenable number.

1222997026729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222997026729 is an equidigital number, since it uses as much as digits as its factorization.

1222997026729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 1222997026729 in words is "one trillion, two hundred twenty-two billion, nine hundred ninety-seven million, twenty-six thousand, seven hundred twenty-nine".