212101220222 has 32 divisors (see below), whose sum is σ = 340708356000. Its totient is φ = 98680511488.

The previous prime is 212101220197. The next prime is 212101220251. The reversal of 212101220222 is 222022101212.

It is a happy number.

It is a super-2 number, since 2×212101220222² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 212101220222.

It is a congruent number.

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, 952154 + ... + 1153602.

It is an arithmetic number, because the mean of its divisors is an integer number (10647136125).

Almost surely, 2^212101220222 is an apocalyptic number.

212101220222 is a deficient number, since it is larger than the sum of its proper divisors (128607135778).

212101220222 is a wasteful number, since it uses less digits than its factorization.

212101220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201820.

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

Adding to 212101220222 its reverse (222022101212), we get a palindrome (434123321434).

The spelling of 212101220222 in words is "two hundred twelve billion, one hundred one million, two hundred twenty thousand, two hundred twenty-two".