21231310022231 has 8 divisors (see below), whose sum is σ = 22958512966080. Its totient is φ = 19557251784448.

The previous prime is 21231310022207. The next prime is 21231310022243. The reversal of 21231310022231 is 13222001313212.

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 21231310022231 - 2³⁸ = 20956432115287 is a prime.

It is a super-2 number, since 2×21231310022231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21231310022197 and 21231310022206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21231310022831) 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, 13286175686 + ... + 13286177283.

It is an arithmetic number, because the mean of its divisors is an integer number (2869814120760).

Almost surely, 2^{21231310022231} is an apocalyptic number.

21231310022231 is a deficient number, since it is larger than the sum of its proper divisors (1727202943849).

21231310022231 is a wasteful number, since it uses less digits than its factorization.

21231310022231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26572353033.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21231310022231 its reverse (13222001313212), we get a palindrome (34453311335443).

The spelling of 21231310022231 in words is "twenty-one trillion, two hundred thirty-one billion, three hundred ten million, twenty-two thousand, two hundred thirty-one".