21032111300023 has 4 divisors (see below), whose sum is σ = 22139064526360. Its totient is φ = 19925158073688.

The previous prime is 21032111299981. The next prime is 21032111300117. The reversal of 21032111300023 is 32000311123012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21032111300023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1106953226317 = 21032111300023 / (2 + 1 + 0 + 3 + 2 + 1 + 1 + 1 + 3 + 0 + 0 + 0 + 2 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032111300723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553476613140 + ... + 553476613177.

It is an arithmetic number, because the mean of its divisors is an integer number (5534766131590).

Almost surely, 2^{21032111300023} is an apocalyptic number.

21032111300023 is a deficient number, since it is larger than the sum of its proper divisors (1106953226337).

21032111300023 is a wasteful number, since it uses less digits than its factorization.

21032111300023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106953226336.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21032111300023 its reverse (32000311123012), we get a palindrome (53032422423035).

The spelling of 21032111300023 in words is "twenty-one trillion, thirty-two billion, one hundred eleven million, three hundred thousand, twenty-three".