121013917 has 4 divisors (see below), whose sum is σ = 122472000. Its totient is φ = 119555836.

The previous prime is 121013903. The next prime is 121013929. The reversal of 121013917 is 719310121.

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: 719310121 = 83 ⋅8666387.

It is a cyclic number.

It is not a de Polignac number, because 121013917 - 2²³ = 112625309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121013891 and 121013900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121013957) 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, 728917 + ... + 729082.

It is an arithmetic number, because the mean of its divisors is an integer number (30618000).

Almost surely, 2^121013917 is an apocalyptic number.

It is an amenable number.

121013917 is a deficient number, since it is larger than the sum of its proper divisors (1458083).

121013917 is an equidigital number, since it uses as much as digits as its factorization.

121013917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458082.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 121013917 is about 11000.6325727205. The cubic root of 121013917 is about 494.6277063249.

The spelling of 121013917 in words is "one hundred twenty-one million, thirteen thousand, nine hundred seventeen".