222100022121210 has 128 divisors (see below), whose sum is σ = 595708579872000. Its totient is φ = 58882508257536.

The previous prime is 222100022121209. The next prime is 222100022121247. The reversal of 222100022121210 is 12121220001222.

It is a happy number.

222100022121210 is a `hidden beast` number, since 2 + 2 + 210 + 0 + 0 + 221 + 21 + 210 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2269543261 + ... + 2269641119.

It is an arithmetic number, because the mean of its divisors is an integer number (4653973280250).

Almost surely, 2^{222100022121210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222100022121210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297854289936000).

222100022121210 is an abundant number, since it is smaller than the sum of its proper divisors (373608557750790).

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

222100022121210 is a wasteful number, since it uses less digits than its factorization.

222100022121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146637 (or 146631 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222100022121210 its reverse (12121220001222), we get a palindrome (234221242122432).

The spelling of 222100022121210 in words is "two hundred twenty-two trillion, one hundred billion, twenty-two million, one hundred twenty-one thousand, two hundred ten".