21332203023123 has 16 divisors (see below), whose sum is σ = 31635945538560. Its totient is φ = 14206761871848.

The previous prime is 21332203023119. The next prime is 21332203023143. The reversal of 21332203023123 is 32132030223312.

21332203023123 is a `hidden beast` number, since 2 + 1 + 3 + 322 + 0 + 302 + 31 + 2 + 3 = 666.

It is not a de Polignac number, because 21332203023123 - 2² = 21332203023119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21332203023143) 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, 408495915 + ... + 408548132.

It is an arithmetic number, because the mean of its divisors is an integer number (1977246596160).

Almost surely, 2^{21332203023123} is an apocalyptic number.

21332203023123 is a deficient number, since it is larger than the sum of its proper divisors (10303742515437).

21332203023123 is an equidigital number, since it uses as much as digits as its factorization.

21332203023123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817045023 (or 817045017 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 21332203023123 its reverse (32132030223312), we get a palindrome (53464233246435).

The spelling of 21332203023123 in words is "twenty-one trillion, three hundred thirty-two billion, two hundred three million, twenty-three thousand, one hundred twenty-three".