121433969 has 2 divisors, whose sum is σ = 121433970. Its totient is φ = 121433968.

The previous prime is 121433929. The next prime is 121433989. The reversal of 121433969 is 969334121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67043344 + 54390625 = 8188^2 + 7375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121433969 is a prime.

It is a super-2 number, since 2×121433969² = 29492417654185922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121433909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60716984 + 60716985.

It is an arithmetic number, because the mean of its divisors is an integer number (60716985).

Almost surely, 2^121433969 is an apocalyptic number.

It is an amenable number.

121433969 is a deficient number, since it is larger than the sum of its proper divisors (1).

121433969 is an equidigital number, since it uses as much as digits as its factorization.

121433969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 38.

The square root of 121433969 is about 11019.7082084781. The cubic root of 121433969 is about 495.1993469773.

The spelling of 121433969 in words is "one hundred twenty-one million, four hundred thirty-three thousand, nine hundred sixty-nine".