12212121102 has 16 divisors (see below), whose sum is σ = 24431640960. Its totient is φ = 4069473912.

The previous prime is 12212121079. The next prime is 12212121143. The reversal of 12212121102 is 20112121221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286708 + ... + 326535.

It is an arithmetic number, because the mean of its divisors is an integer number (1526977560).

Almost surely, 2^12212121102 is an apocalyptic number.

12212121102 is an abundant number, since it is smaller than the sum of its proper divisors (12219519858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12212121102 is a wasteful number, since it uses less digits than its factorization.

12212121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616567.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12212121102 its reverse (20112121221), we get a palindrome (32324242323).

The spelling of 12212121102 in words is "twelve billion, two hundred twelve million, one hundred twenty-one thousand, one hundred two".