102212121021112 has 32 divisors (see below), whose sum is σ = 195624653294880. Its totient is φ = 50049111565440.

The previous prime is 102212121021083. The next prime is 102212121021113. The reversal of 102212121021112 is 211120121212201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 102212121021112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212121021113) 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, 222567588 + ... + 223026355.

It is an arithmetic number, because the mean of its divisors is an integer number (6113270415465).

Almost surely, 2^{102212121021112} is an apocalyptic number.

It is an amenable number.

102212121021112 is a deficient number, since it is larger than the sum of its proper divisors (93412532273768).

102212121021112 is a wasteful number, since it uses less digits than its factorization.

102212121021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445594543 (or 445594539 counting only the distinct ones).

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

Adding to 102212121021112 its reverse (211120121212201), we get a palindrome (313332242233313).

The spelling of 102212121021112 in words is "one hundred two trillion, two hundred twelve billion, one hundred twenty-one million, twenty-one thousand, one hundred twelve".