212102120122 has 16 divisors (see below), whose sum is σ = 326132376192. Its totient is φ = 103394810080.

The previous prime is 212102120057. The next prime is 212102120123. The reversal of 212102120122 is 221021201212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212102120096 and 212102120105.

It is not an unprimeable number, because it can be changed into a prime (212102120123) 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, 747808 + ... + 991675.

It is an arithmetic number, because the mean of its divisors is an integer number (20383273512).

Almost surely, 2^212102120122 is an apocalyptic number.

212102120122 is a deficient number, since it is larger than the sum of its proper divisors (114030256070).

212102120122 is a wasteful number, since it uses less digits than its factorization.

212102120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741013.

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

Adding to 212102120122 its reverse (221021201212), we get a palindrome (433123321334).

The spelling of 212102120122 in words is "two hundred twelve billion, one hundred two million, one hundred twenty thousand, one hundred twenty-two".