12121112102 has 32 divisors (see below), whose sum is σ = 21047765760. Its totient is φ = 5180713120.

The previous prime is 12121112099. The next prime is 12121112123. The reversal of 12121112102 is 20121112121.

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 15 ways as a sum of consecutive naturals, for example, 173153 + ... + 232860.

It is an arithmetic number, because the mean of its divisors is an integer number (657742680).

Almost surely, 2^12121112102 is an apocalyptic number.

12121112102 is a deficient number, since it is larger than the sum of its proper divisors (8926653658).

12121112102 is a wasteful number, since it uses less digits than its factorization.

12121112102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406108.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12121112102 its reverse (20121112121), we get a palindrome (32242224223).

The spelling of 12121112102 in words is "twelve billion, one hundred twenty-one million, one hundred twelve thousand, one hundred two".