121023091 has 8 divisors (see below), whose sum is σ = 141135200. Its totient is φ = 103733784.

The previous prime is 121023083. The next prime is 121023143. The reversal of 121023091 is 190320121.

It is not a de Polignac number, because 121023091 - 2³ = 121023083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121023031) 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, 176076 + ... + 176761.

It is an arithmetic number, because the mean of its divisors is an integer number (17641900).

Almost surely, 2^121023091 is an apocalyptic number.

121023091 is a deficient number, since it is larger than the sum of its proper divisors (20112109).

121023091 is an frugal number, since it uses more digits than its factorization.

121023091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352858 (or 352844 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 121023091 is about 11001.0495408393. The cubic root of 121023091 is about 494.6402051626.

The spelling of 121023091 in words is "one hundred twenty-one million, twenty-three thousand, ninety-one".