121131231113969 has 2 divisors, whose sum is σ = 121131231113970. Its totient is φ = 121131231113968.

The previous prime is 121131231113957. The next prime is 121131231114029. The reversal of 121131231113969 is 969311132131121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82483723023025 + 38647508090944 = 9082055^2 + 6216712^2 .

It is a cyclic number.

It is not a de Polignac number, because 121131231113969 - 2¹⁶ = 121131231048433 is a prime.

It is a super-2 number, since 2×121131231113969² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (121131231113909) 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, 60565615556984 + 60565615556985.

It is an arithmetic number, because the mean of its divisors is an integer number (60565615556985).

Almost surely, 2^{121131231113969} is an apocalyptic number.

It is an amenable number.

121131231113969 is a deficient number, since it is larger than the sum of its proper divisors (1).

121131231113969 is an equidigital number, since it uses as much as digits as its factorization.

121131231113969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 44.

The spelling of 121131231113969 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, two hundred thirty-one million, one hundred thirteen thousand, nine hundred sixty-nine".