121652356169 has 2 divisors, whose sum is σ = 121652356170. Its totient is φ = 121652356168.

The previous prime is 121652356151. The next prime is 121652356183. The reversal of 121652356169 is 961653256121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111965859769 + 9686496400 = 334613^2 + 98420^2 .

It is a cyclic number.

It is not a de Polignac number, because 121652356169 - 2¹⁶ = 121652290633 is a prime.

It is a super-2 number, since 2×121652356169² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121652356139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60826178084 + 60826178085.

It is an arithmetic number, because the mean of its divisors is an integer number (60826178085).

Almost surely, 2^121652356169 is an apocalyptic number.

It is an amenable number.

121652356169 is a deficient number, since it is larger than the sum of its proper divisors (1).

121652356169 is an equidigital number, since it uses as much as digits as its factorization.

121652356169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 47.

The spelling of 121652356169 in words is "one hundred twenty-one billion, six hundred fifty-two million, three hundred fifty-six thousand, one hundred sixty-nine".