121900713 has 64 divisors (see below), whose sum is σ = 199065600. Its totient is φ = 65482560.

The previous prime is 121900699. The next prime is 121900721. The reversal of 121900713 is 317009121.

It is not a de Polignac number, because 121900713 - 2⁴ = 121900697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121900733) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1139206 + ... + 1139312.

It is an arithmetic number, because the mean of its divisors is an integer number (3110400).

Almost surely, 2^121900713 is an apocalyptic number.

It is an amenable number.

121900713 is a deficient number, since it is larger than the sum of its proper divisors (77164887).

121900713 is a wasteful number, since it uses less digits than its factorization.

121900713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 121900713 is about 11040.8655910667. The cubic root of 121900713 is about 495.8329857933.

Adding to 121900713 its reverse (317009121), we get a palindrome (438909834).

The spelling of 121900713 in words is "one hundred twenty-one million, nine hundred thousand, seven hundred thirteen".