21023331001 has 8 divisors (see below), whose sum is σ = 21226106880. Its totient is φ = 20820848832.

The previous prime is 21023330989. The next prime is 21023331023. The reversal of 21023331001 is 10013332012.

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 21023331001 - 2⁷ = 21023330873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21023335001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71796 + ... + 217258.

It is an arithmetic number, because the mean of its divisors is an integer number (2653263360).

Almost surely, 2^21023331001 is an apocalyptic number.

It is an amenable number.

21023331001 is a deficient number, since it is larger than the sum of its proper divisors (202775879).

21023331001 is a wasteful number, since it uses less digits than its factorization.

21023331001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146855.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21023331001 its reverse (10013332012), we get a palindrome (31036663013).

The spelling of 21023331001 in words is "twenty-one billion, twenty-three million, three hundred thirty-one thousand, one".