12121010102 has 16 divisors (see below), whose sum is σ = 18306812832. Its totient is φ = 6018779520.

The previous prime is 12121010087. The next prime is 12121010107. The reversal of 12121010102 is 20101012121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121010107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669623 + ... + 687485.

It is an arithmetic number, because the mean of its divisors is an integer number (1144175802).

Almost surely, 2^12121010102 is an apocalyptic number.

12121010102 is a deficient number, since it is larger than the sum of its proper divisors (6185802730).

12121010102 is a wasteful number, since it uses less digits than its factorization.

12121010102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20183.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12121010102 its reverse (20101012121), we get a palindrome (32222022223).

The spelling of 12121010102 in words is "twelve billion, one hundred twenty-one million, ten thousand, one hundred two".