121325657 has 4 divisors (see below), whose sum is σ = 122503680. Its totient is φ = 120147636.

The previous prime is 121325569. The next prime is 121325669. The reversal of 121325657 is 756523121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121325657 - 2¹² = 121321561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121325557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588857 + ... + 589062.

It is an arithmetic number, because the mean of its divisors is an integer number (30625920).

Almost surely, 2^121325657 is an apocalyptic number.

It is an amenable number.

121325657 is a deficient number, since it is larger than the sum of its proper divisors (1178023).

121325657 is a wasteful number, since it uses less digits than its factorization.

121325657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178022.

The product of its digits is 12600, while the sum is 32.

The square root of 121325657 is about 11014.7926444396. The cubic root of 121325657 is about 495.0520735613.

Adding to 121325657 its reverse (756523121), we get a palindrome (877848778).

The spelling of 121325657 in words is "one hundred twenty-one million, three hundred twenty-five thousand, six hundred fifty-seven".