27222231 has 16 divisors (see below), whose sum is σ = 38931840. Its totient is φ = 16866720.

The previous prime is 27222199. The next prime is 27222233. The reversal of 27222231 is 13222272.

It is a happy number.

It is not a de Polignac number, because 27222231 - 2⁵ = 27222199 is a prime.

It is a super-2 number, since 2×27222231² = 1482099721234722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27222198 and 27222207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27222233) 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, 1485 + ... + 7526.

It is an arithmetic number, because the mean of its divisors is an integer number (2433240).

Almost surely, 2^27222231 is an apocalyptic number.

27222231 is a deficient number, since it is larger than the sum of its proper divisors (11709609).

27222231 is a wasteful number, since it uses less digits than its factorization.

27222231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9086.

The product of its digits is 672, while the sum is 21.

The square root of 27222231 is about 5217.4927886869. The cubic root of 27222231 is about 300.8208298573.

The spelling of 27222231 in words is "twenty-seven million, two hundred twenty-two thousand, two hundred thirty-one".