121937291 has 8 divisors (see below), whose sum is σ = 143852544. Its totient is φ = 101145960.

The previous prime is 121937267. The next prime is 121937297. The reversal of 121937291 is 192739121.

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 121937291 - 2²⁶ = 54828427 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (121937297) 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, 280745 + ... + 281178.

It is an arithmetic number, because the mean of its divisors is an integer number (17981568).

Almost surely, 2^121937291 is an apocalyptic number.

121937291 is a deficient number, since it is larger than the sum of its proper divisors (21915253).

121937291 is an equidigital number, since it uses as much as digits as its factorization.

121937291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561961.

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

The square root of 121937291 is about 11042.5219492650. The cubic root of 121937291 is about 495.8825746889.

The spelling of 121937291 in words is "one hundred twenty-one million, nine hundred thirty-seven thousand, two hundred ninety-one".