21023231222001 has 8 divisors (see below), whose sum is σ = 28042737865600. Its totient is φ = 14009606029872.

The previous prime is 21023231221919. The next prime is 21023231222003. The reversal of 21023231222001 is 10022213232012.

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

It is not a de Polignac number, because 21023231222001 - 2²⁹ = 21022694351089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21023231222003) 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, 1470354526 + ... + 1470368823.

It is an arithmetic number, because the mean of its divisors is an integer number (3505342233200).

Almost surely, 2^{21023231222001} is an apocalyptic number.

It is an amenable number.

21023231222001 is a deficient number, since it is larger than the sum of its proper divisors (7019506643599).

21023231222001 is a wasteful number, since it uses less digits than its factorization.

21023231222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940725735.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21023231222001 its reverse (10022213232012), we get a palindrome (31045444454013).

The spelling of 21023231222001 in words is "twenty-one trillion, twenty-three billion, two hundred thirty-one million, two hundred twenty-two thousand, one".