21331022002231 has 8 divisors (see below), whose sum is σ = 21412490758560. Its totient is φ = 21249555990432.

The previous prime is 21331022002229. The next prime is 21331022002237. The reversal of 21331022002231 is 13220022013312.

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 21331022002231 - 2¹ = 21331022002229 is a prime.

It is a super-2 number, since 2×21331022002231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331022002237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15627021 + ... + 16937113.

It is an arithmetic number, because the mean of its divisors is an integer number (2676561344820).

Almost surely, 2^{21331022002231} is an apocalyptic number.

21331022002231 is a deficient number, since it is larger than the sum of its proper divisors (81468756329).

21331022002231 is a wasteful number, since it uses less digits than its factorization.

21331022002231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372265.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21331022002231 its reverse (13220022013312), we get a palindrome (34551044015543).

The spelling of 21331022002231 in words is "twenty-one trillion, three hundred thirty-one billion, twenty-two million, two thousand, two hundred thirty-one".