21320033000023 has 4 divisors (see below), whose sum is σ = 21320086856760. Its totient is φ = 21319979143288.

The previous prime is 21320032999931. The next prime is 21320033000069. The reversal of 21320033000023 is 32000033002312.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21320033000023 - 2⁹ = 21320032999511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320033070023) 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, 26330140 + ... + 27127777.

It is an arithmetic number, because the mean of its divisors is an integer number (5330021714190).

Almost surely, 2^{21320033000023} is an apocalyptic number.

21320033000023 is a deficient number, since it is larger than the sum of its proper divisors (53856737).

21320033000023 is an equidigital number, since it uses as much as digits as its factorization.

21320033000023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53856736.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 21320033000023 its reverse (32000033002312), we get a palindrome (53320066002335).

The spelling of 21320033000023 in words is "twenty-one trillion, three hundred twenty billion, thirty-three million, twenty-three", and thus it is an aban number.