121291793 has 4 divisors (see below), whose sum is σ = 138619200. Its totient is φ = 103964388.

The previous prime is 121291771. The next prime is 121291799. The reversal of 121291793 is 397192121.

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 121291793 - 2¹⁰ = 121290769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121291799) 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, 8663693 + ... + 8663706.

It is an arithmetic number, because the mean of its divisors is an integer number (34654800).

Almost surely, 2^121291793 is an apocalyptic number.

It is an amenable number.

121291793 is a deficient number, since it is larger than the sum of its proper divisors (17327407).

121291793 is an equidigital number, since it uses as much as digits as its factorization.

121291793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17327406.

The product of its digits is 6804, while the sum is 35.

The square root of 121291793 is about 11013.2553316447. The cubic root of 121291793 is about 495.0060101981.

The spelling of 121291793 in words is "one hundred twenty-one million, two hundred ninety-one thousand, seven hundred ninety-three".