10221323231 has 8 divisors (see below), whose sum is σ = 11683814400. Its totient is φ = 8759407608.

The previous prime is 10221323227. The next prime is 10221323237. The reversal of 10221323231 is 13232312201.

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

It is not a de Polignac number, because 10221323231 - 2² = 10221323227 is a prime.

It is a super-2 number, since 2×10221323231² (a number of 21 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 (10221323237) 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, 105131 + ... + 177468.

It is an arithmetic number, because the mean of its divisors is an integer number (1460476800).

Almost surely, 2^10221323231 is an apocalyptic number.

10221323231 is a deficient number, since it is larger than the sum of its proper divisors (1462491169).

10221323231 is an equidigital number, since it uses as much as digits as its factorization.

10221323231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287773.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 10221323231 its reverse (13232312201), we get a palindrome (23453635432).

The spelling of 10221323231 in words is "ten billion, two hundred twenty-one million, three hundred twenty-three thousand, two hundred thirty-one".