222226431 has 16 divisors (see below), whose sum is σ = 358550784. Its totient is φ = 119516544.

The previous prime is 222226429. The next prime is 222226493. The reversal of 222226431 is 134622222.

It is a happy number.

It is not a de Polignac number, because 222226431 - 2¹ = 222226429 is a prime.

It is a super-2 number, since 2×222226431² = 98769173269995522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222226421) 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, 310885 + ... + 311598.

It is an arithmetic number, because the mean of its divisors is an integer number (22409424).

Almost surely, 2^222226431 is an apocalyptic number.

222226431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

222226431 is a deficient number, since it is larger than the sum of its proper divisors (136324353).

222226431 is a wasteful number, since it uses less digits than its factorization.

222226431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622510.

The product of its digits is 2304, while the sum is 24.

The square root of 222226431 is about 14907.2610160284. The cubic root of 222226431 is about 605.7106881816.

Adding to 222226431 its reverse (134622222), we get a palindrome (356848653).

The spelling of 222226431 in words is "two hundred twenty-two million, two hundred twenty-six thousand, four hundred thirty-one".