222231012 has 12 divisors (see below), whose sum is σ = 518539056. Its totient is φ = 74077000.

The previous prime is 222231001. The next prime is 222231013. The reversal of 222231012 is 210132222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 222230982 and 222231000.

It is not an unprimeable number, because it can be changed into a prime (222231013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9259614 + ... + 9259637.

It is an arithmetic number, because the mean of its divisors is an integer number (43211588).

Almost surely, 2^222231012 is an apocalyptic number.

It is an amenable number.

222231012 is an abundant number, since it is smaller than the sum of its proper divisors (296308044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222231012 is a wasteful number, since it uses less digits than its factorization.

222231012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18519258 (or 18519256 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 222231012 is about 14907.4146651926. The cubic root of 222231012 is about 605.7148502152.

Adding to 222231012 its reverse (210132222), we get a palindrome (432363234).

The spelling of 222231012 in words is "two hundred twenty-two million, two hundred thirty-one thousand, twelve".