121262291 has 2 divisors, whose sum is σ = 121262292. Its totient is φ = 121262290.

The previous prime is 121262263. The next prime is 121262293. The reversal of 121262291 is 192262121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121262291 - 2⁶ = 121262227 is a prime.

Together with 121262293, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121262291.

It is not a weakly prime, because it can be changed into another prime (121262293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60631145 + 60631146.

It is an arithmetic number, because the mean of its divisors is an integer number (60631146).

Almost surely, 2^121262291 is an apocalyptic number.

121262291 is a deficient number, since it is larger than the sum of its proper divisors (1).

121262291 is an equidigital number, since it uses as much as digits as its factorization.

121262291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 26.

The square root of 121262291 is about 11011.9158641900. The cubic root of 121262291 is about 494.9658732382.

The spelling of 121262291 in words is "one hundred twenty-one million, two hundred sixty-two thousand, two hundred ninety-one".