212102110021222 has 16 divisors (see below), whose sum is σ = 324164840164560. Its totient is φ = 104047271759392.

The previous prime is 212102110021213. The next prime is 212102110021223. The reversal of 212102110021222 is 222120011201212.

It is a self number, because there is not a number n which added to its sum of digits gives 212102110021222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102110021223) 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, 23182597 + ... + 31010272.

It is an arithmetic number, because the mean of its divisors is an integer number (20260302510285).

Almost surely, 2^{212102110021222} is an apocalyptic number.

212102110021222 is a deficient number, since it is larger than the sum of its proper divisors (112062730143338).

212102110021222 is a wasteful number, since it uses less digits than its factorization.

212102110021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54229847.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212102110021222 its reverse (222120011201212), we get a palindrome (434222121222434).

The spelling of 212102110021222 in words is "two hundred twelve trillion, one hundred two billion, one hundred ten million, twenty-one thousand, two hundred twenty-two".