222501231 has 6 divisors (see below), whose sum is σ = 321390680. Its totient is φ = 148334148.

The previous prime is 222501211. The next prime is 222501247. The reversal of 222501231 is 132105222.

It is not a de Polignac number, because 222501231 - 2⁵ = 222501199 is a prime.

It is a super-2 number, since 2×222501231² = 99013595593030722, which 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 (222501211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12361171 + ... + 12361188.

Almost surely, 2^222501231 is an apocalyptic number.

222501231 is a deficient number, since it is larger than the sum of its proper divisors (98889449).

222501231 is a wasteful number, since it uses less digits than its factorization.

222501231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24722365 (or 24722362 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 222501231 is about 14916.4751533330. The cubic root of 222501231 is about 605.9602545576.

Adding to 222501231 its reverse (132105222), we get a palindrome (354606453).

The spelling of 222501231 in words is "two hundred twenty-two million, five hundred one thousand, two hundred thirty-one".