121291293 has 8 divisors (see below), whose sum is σ = 162324000. Its totient is φ = 80559728.

The previous prime is 121291279. The next prime is 121291297. The reversal of 121291293 is 392192121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121291293 - 2⁹ = 121290781 is a prime.

It is a super-2 number, since 2×121291293² = 29423155515223698, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121291293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121291297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74343 + ... + 75956.

It is an arithmetic number, because the mean of its divisors is an integer number (20290500).

Almost surely, 2^121291293 is an apocalyptic number.

It is an amenable number.

121291293 is a deficient number, since it is larger than the sum of its proper divisors (41032707).

121291293 is a wasteful number, since it uses less digits than its factorization.

121291293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150571.

The product of its digits is 1944, while the sum is 30.

The square root of 121291293 is about 11013.2326317026. The cubic root of 121291293 is about 495.0053300110.

The spelling of 121291293 in words is "one hundred twenty-one million, two hundred ninety-one thousand, two hundred ninety-three".