1221302023159 has 2 divisors, whose sum is σ = 1221302023160. Its totient is φ = 1221302023158.

The previous prime is 1221302023099. The next prime is 1221302023189. The reversal of 1221302023159 is 9513202031221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1221302023159 - 2²⁹ = 1220765152247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1221302023159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221302023189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610651011579 + 610651011580.

It is an arithmetic number, because the mean of its divisors is an integer number (610651011580).

Almost surely, 2^{1221302023159} is an apocalyptic number.

1221302023159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221302023159 is an equidigital number, since it uses as much as digits as its factorization.

1221302023159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 1221302023159 in words is "one trillion, two hundred twenty-one billion, three hundred two million, twenty-three thousand, one hundred fifty-nine".