222121120210 has 16 divisors (see below), whose sum is σ = 436165108992. Its totient is φ = 80771316400.

The previous prime is 222121120189. The next prime is 222121120213. The reversal of 222121120210 is 12021121222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (222121120213) 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, 1009641346 + ... + 1009641565.

It is an arithmetic number, because the mean of its divisors is an integer number (27260319312).

Almost surely, 2^222121120210 is an apocalyptic number.

222121120210 is a deficient number, since it is larger than the sum of its proper divisors (214043988782).

222121120210 is a wasteful number, since it uses less digits than its factorization.

222121120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019282929.

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

Adding to 222121120210 its reverse (12021121222), we get a palindrome (234142241432).

The spelling of 222121120210 in words is "two hundred twenty-two billion, one hundred twenty-one million, one hundred twenty thousand, two hundred ten".