121888923 has 32 divisors (see below), whose sum is σ = 180290880. Its totient is φ = 72783360.

The previous prime is 121888909. The next prime is 121888927. The reversal of 121888923 is 329888121.

It is not a de Polignac number, because 121888923 - 2¹² = 121884827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121888927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 225033 + ... + 225573.

It is an arithmetic number, because the mean of its divisors is an integer number (5634090).

Almost surely, 2^121888923 is an apocalyptic number.

121888923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121888923 is a deficient number, since it is larger than the sum of its proper divisors (58401957).

121888923 is a wasteful number, since it uses less digits than its factorization.

121888923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719.

The product of its digits is 55296, while the sum is 42.

The square root of 121888923 is about 11040.3316526271. The cubic root of 121888923 is about 495.8169999437.

The spelling of 121888923 in words is "one hundred twenty-one million, eight hundred eighty-eight thousand, nine hundred twenty-three".