222206031 has 24 divisors (see below), whose sum is σ = 349709840. Its totient is φ = 139418496.

The previous prime is 222206029. The next prime is 222206057. The reversal of 222206031 is 130602222.

It is not a de Polignac number, because 222206031 - 2¹ = 222206029 is a prime.

It is a super-2 number, since 2×222206031² = 98751040425545922, 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 = 222205995 and 222206013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222206071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6436 + ... + 22041.

Almost surely, 2^222206031 is an apocalyptic number.

222206031 is a deficient number, since it is larger than the sum of its proper divisors (127503809).

222206031 is a wasteful number, since it uses less digits than its factorization.

222206031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28520 (or 28497 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 222206031 is about 14906.5767700032. The cubic root of 222206031 is about 605.6921532184.

Adding to 222206031 its reverse (130602222), we get a palindrome (352808253).

The spelling of 222206031 in words is "two hundred twenty-two million, two hundred six thousand, thirty-one".