10221311231 has 4 divisors (see below), whose sum is σ = 10759275000. Its totient is φ = 9683347464.

The previous prime is 10221311209. The next prime is 10221311239. The reversal of 10221311231 is 13211312201.

10221311231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10221311231 - 2¹⁸ = 10221049087 is a prime.

It is a super-2 number, since 2×10221311231² (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 (10221311239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268981856 + ... + 268981893.

It is an arithmetic number, because the mean of its divisors is an integer number (2689818750).

Almost surely, 2^10221311231 is an apocalyptic number.

10221311231 is a deficient number, since it is larger than the sum of its proper divisors (537963769).

10221311231 is an equidigital number, since it uses as much as digits as its factorization.

10221311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537963768.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10221311231 its reverse (13211312201), we get a palindrome (23432623432).

The spelling of 10221311231 in words is "ten billion, two hundred twenty-one million, three hundred eleven thousand, two hundred thirty-one".