222009631 has 8 divisors (see below), whose sum is σ = 231202944. Its totient is φ = 212943360.

The previous prime is 222009581. The next prime is 222009649. The reversal of 222009631 is 136900222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222009631 - 2⁷ = 222009503 is a prime.

It is a super-2 number, since 2×222009631² = 98576552513512322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222009596 and 222009605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222009331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28186 + ... + 35191.

It is an arithmetic number, because the mean of its divisors is an integer number (28900368).

Almost surely, 2^222009631 is an apocalyptic number.

222009631 is a deficient number, since it is larger than the sum of its proper divisors (9193313).

222009631 is a wasteful number, since it uses less digits than its factorization.

222009631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63521.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 222009631 is about 14899.9876174445. The cubic root of 222009631 is about 605.5136507071.

Adding to 222009631 its reverse (136900222), we get a palindrome (358909853).

The spelling of 222009631 in words is "two hundred twenty-two million, nine thousand, six hundred thirty-one".