222121012210 has 16 divisors (see below), whose sum is σ = 420860865600. Its totient is φ = 84172172976.

The previous prime is 222121012093. The next prime is 222121012213. The reversal of 222121012210 is 12210121222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (222121012213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584528790 + ... + 584529169.

It is an arithmetic number, because the mean of its divisors is an integer number (26303804100).

Almost surely, 2^222121012210 is an apocalyptic number.

222121012210 is a deficient number, since it is larger than the sum of its proper divisors (198739853390).

222121012210 is a wasteful number, since it uses less digits than its factorization.

222121012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169057985.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222121012210 its reverse (12210121222), we get a palindrome (234331133432).

It can be divided in two parts, 222121012 and 210, that added together give a palindrome (222121222).

The spelling of 222121012210 in words is "two hundred twenty-two billion, one hundred twenty-one million, twelve thousand, two hundred ten".