121268091 has 24 divisors (see below), whose sum is σ = 188642640. Its totient is φ = 69092352.

The previous prime is 121268039. The next prime is 121268113. The reversal of 121268091 is 190862121.

It is a happy number.

It is not a de Polignac number, because 121268091 - 2⁷ = 121267963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121268011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59115 + ... + 61131.

It is an arithmetic number, because the mean of its divisors is an integer number (7860110).

Almost surely, 2^121268091 is an apocalyptic number.

121268091 is a deficient number, since it is larger than the sum of its proper divisors (67374549).

121268091 is a wasteful number, since it uses less digits than its factorization.

121268091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443 (or 2436 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 121268091 is about 11012.1792121269. The cubic root of 121268091 is about 494.9737645518.

The spelling of 121268091 in words is "one hundred twenty-one million, two hundred sixty-eight thousand, ninety-one".