21100320333023 has 8 divisors (see below), whose sum is σ = 21550848825792. Its totient is φ = 20649857903136.

The previous prime is 21100320333007. The next prime is 21100320333031. The reversal of 21100320333023 is 32033302300112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21100320333023 - 2⁴ = 21100320333007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21100320333023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100320333073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15869840 + ... + 17147957.

It is an arithmetic number, because the mean of its divisors is an integer number (2693856103224).

Almost surely, 2^{21100320333023} is an apocalyptic number.

21100320333023 is a deficient number, since it is larger than the sum of its proper divisors (450528492769).

21100320333023 is a wasteful number, since it uses less digits than its factorization.

21100320333023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33031441.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21100320333023 its reverse (32033302300112), we get a palindrome (53133622633135).

The spelling of 21100320333023 in words is "twenty-one trillion, one hundred billion, three hundred twenty million, three hundred thirty-three thousand, twenty-three".