121303091 has 16 divisors (see below), whose sum is σ = 149554944. Its totient is φ = 95809824.

The previous prime is 121303033. The next prime is 121303141. The reversal of 121303091 is 190303121.

It is a cyclic number.

It is not a de Polignac number, because 121303091 - 2¹⁴ = 121286707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121303001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101600 + ... + 102786.

It is an arithmetic number, because the mean of its divisors is an integer number (9347184).

Almost surely, 2^121303091 is an apocalyptic number.

121303091 is a deficient number, since it is larger than the sum of its proper divisors (28251853).

121303091 is a wasteful number, since it uses less digits than its factorization.

121303091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 121303091 is about 11013.7682470624. The cubic root of 121303091 is about 495.0213792079.

It can be divided in two parts, 1213030 and 91, that added together give a palindrome (1213121).

The spelling of 121303091 in words is "one hundred twenty-one million, three hundred three thousand, ninety-one".