233121100023 has 24 divisors (see below), whose sum is σ = 401566783488. Its totient is φ = 127420227792.

The previous prime is 233121100021. The next prime is 233121100061. The reversal of 233121100023 is 320001121332.

It is not a de Polignac number, because 233121100023 - 2¹ = 233121100021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 233121099969 and 233121100005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233121100021) 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, 80440615 + ... + 80443512.

It is an arithmetic number, because the mean of its divisors is an integer number (16731949312).

Almost surely, 2^233121100023 is an apocalyptic number.

233121100023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

233121100023 is a deficient number, since it is larger than the sum of its proper divisors (168445683465).

233121100023 is a wasteful number, since it uses less digits than its factorization.

233121100023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160884163 (or 160884160 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 233121100023 its reverse (320001121332), we get a palindrome (553122221355).

The spelling of 233121100023 in words is "two hundred thirty-three billion, one hundred twenty-one million, one hundred thousand, twenty-three".