222130636 has 48 divisors (see below), whose sum is σ = 506592576. Its totient is φ = 82704384.

The previous prime is 222130591. The next prime is 222130637. The reversal of 222130636 is 636031222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 222130636.

It is not an unprimeable number, because it can be changed into a prime (222130637) 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, 11761 + ... + 24136.

It is an arithmetic number, because the mean of its divisors is an integer number (10554012).

Almost surely, 2^222130636 is an apocalyptic number.

222130636 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

222130636 is an abundant number, since it is smaller than the sum of its proper divisors (284461940).

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

222130636 is a wasteful number, since it uses less digits than its factorization.

222130636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35938 (or 35936 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 222130636 is about 14904.0476381418. The cubic root of 222130636 is about 605.6236412380.

Adding to 222130636 its reverse (636031222), we get a palindrome (858161858).

The spelling of 222130636 in words is "two hundred twenty-two million, one hundred thirty thousand, six hundred thirty-six".