222221212010 has 32 divisors (see below), whose sum is σ = 461853584640. Its totient is φ = 75404662272.

The previous prime is 222221211911. The next prime is 222221212061. The reversal of 222221212010 is 10212122222.

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 222221212010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16357070 + ... + 16370649.

It is an arithmetic number, because the mean of its divisors is an integer number (14432924520).

Almost surely, 2^222221212010 is an apocalyptic number.

222221212010 is an abundant number, since it is smaller than the sum of its proper divisors (239632372630).

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

222221212010 is a wasteful number, since it uses less digits than its factorization.

222221212010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32727830.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222221212010 its reverse (10212122222), we get a palindrome (232433334232).

The spelling of 222221212010 in words is "two hundred twenty-two billion, two hundred twenty-one million, two hundred twelve thousand, ten".