121813023 has 16 divisors (see below), whose sum is σ = 168312320. Its totient is φ = 78309504.

The previous prime is 121812989. The next prime is 121813033. The reversal of 121813023 is 320318121.

It is not a de Polignac number, because 121813023 - 2¹⁴ = 121796639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121813033) 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, 4215 + ... + 16167.

It is an arithmetic number, because the mean of its divisors is an integer number (10519520).

Almost surely, 2^121813023 is an apocalyptic number.

121813023 is a deficient number, since it is larger than the sum of its proper divisors (46499297).

121813023 is a wasteful number, since it uses less digits than its factorization.

121813023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12078.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 121813023 is about 11036.8937206082. The cubic root of 121813023 is about 495.7140638078.

It can be divided in two parts, 1218 and 13023, that added together give a palindrome (14241).

The spelling of 121813023 in words is "one hundred twenty-one million, eight hundred thirteen thousand, twenty-three".