212102102211112 has 8 divisors (see below), whose sum is σ = 397691441645850. Its totient is φ = 106051051105552.

The previous prime is 212102102211107. The next prime is 212102102211217. The reversal of 212102102211112 is 211112201201212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 146571555342276 + 65530546868836 = 12106674^2 + 8095094^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 212102102211112.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13256381388187 + ... + 13256381388202.

Almost surely, 2^{212102102211112} is an apocalyptic number.

It is an amenable number.

212102102211112 is a deficient number, since it is larger than the sum of its proper divisors (185589339434738).

212102102211112 is a wasteful number, since it uses less digits than its factorization.

212102102211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26512762776395 (or 26512762776391 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212102102211112 its reverse (211112201201212), we get a palindrome (423214303412324).

The spelling of 212102102211112 in words is "two hundred twelve trillion, one hundred two billion, one hundred two million, two hundred eleven thousand, one hundred twelve".