121330560157 has 4 divisors (see below), whose sum is σ = 121725774016. Its totient is φ = 120935346300.

The previous prime is 121330560139. The next prime is 121330560167. The reversal of 121330560157 is 751065033121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 751065033121 = 13 ⋅57774233317.

It is a cyclic number.

It is not a de Polignac number, because 121330560157 - 2²³ = 121322171549 is a prime.

It is a super-2 number, since 2×121330560157² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121330560167) 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, 197606469 + ... + 197607082.

It is an arithmetic number, because the mean of its divisors is an integer number (30431443504).

Almost surely, 2^121330560157 is an apocalyptic number.

It is an amenable number.

121330560157 is a deficient number, since it is larger than the sum of its proper divisors (395213859).

121330560157 is an equidigital number, since it uses as much as digits as its factorization.

121330560157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395213858.

The product of its (nonzero) digits is 18900, while the sum is 34.

Adding to 121330560157 its reverse (751065033121), we get a palindrome (872395593278).

The spelling of 121330560157 in words is "one hundred twenty-one billion, three hundred thirty million, five hundred sixty thousand, one hundred fifty-seven".