221232031323 has 32 divisors (see below), whose sum is σ = 309671873280. Its totient is φ = 140328975360.

The previous prime is 221232031291. The next prime is 221232031411. The reversal of 221232031323 is 323130232122.

It is not a de Polignac number, because 221232031323 - 2⁵ = 221232031291 is a prime.

It is a super-2 number, since 2×221232031323² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221232031293 and 221232031302.

It is not an unprimeable number, because it can be changed into a prime (221232031723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3453715 + ... + 3517187.

It is an arithmetic number, because the mean of its divisors is an integer number (9677246040).

Almost surely, 2^221232031323 is an apocalyptic number.

221232031323 is a deficient number, since it is larger than the sum of its proper divisors (88439841957).

221232031323 is a wasteful number, since it uses less digits than its factorization.

221232031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64219.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 221232031323 its reverse (323130232122), we get a palindrome (544362263445).

The spelling of 221232031323 in words is "two hundred twenty-one billion, two hundred thirty-two million, thirty-one thousand, three hundred twenty-three".