10221132231 has 16 divisors (see below), whose sum is σ = 15145521120. Its totient is φ = 6812691840.

The previous prime is 10221132227. The next prime is 10221132277. The reversal of 10221132231 is 13223112201.

10221132231 is a `hidden beast` number, since 102 + 211 + 322 + 31 = 666.

It is not a de Polignac number, because 10221132231 - 2² = 10221132227 is a prime.

It is a super-2 number, since 2×10221132231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221139231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105121 + ... + 177461.

It is an arithmetic number, because the mean of its divisors is an integer number (946595070).

Almost surely, 2^10221132231 is an apocalyptic number.

10221132231 is a deficient number, since it is larger than the sum of its proper divisors (4924388889).

10221132231 is an equidigital number, since it uses as much as digits as its factorization.

10221132231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77583 (or 77577 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 10221132231 its reverse (13223112201), we get a palindrome (23444244432).

The spelling of 10221132231 in words is "ten billion, two hundred twenty-one million, one hundred thirty-two thousand, two hundred thirty-one".