222202122210 has 128 divisors (see below), whose sum is σ = 597254515200. Its totient is φ = 58783760640.

The previous prime is 222202122209. The next prime is 222202122277. The reversal of 222202122210 is 12221202222.

222202122210 is a `hidden beast` number, since 22 + 220 + 212 + 2 + 210 = 666.

It is a super-2 number, since 2×222202122210² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24389136 + ... + 24398244.

It is an arithmetic number, because the mean of its divisors is an integer number (4666050900).

Almost surely, 2^222202122210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222202122210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298627257600).

222202122210 is an abundant number, since it is smaller than the sum of its proper divisors (375052392990).

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

222202122210 is a wasteful number, since it uses less digits than its factorization.

222202122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9833 (or 9827 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222202122210 its reverse (12221202222), we get a palindrome (234423324432).

The spelling of 222202122210 in words is "two hundred twenty-two billion, two hundred two million, one hundred twenty-two thousand, two hundred ten".