12121030102 has 4 divisors (see below), whose sum is σ = 18181545156. Its totient is φ = 6060515050.

The previous prime is 12121030049. The next prime is 12121030169. The reversal of 12121030102 is 20103012121.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 3030257524 + ... + 3030257527.

It is an arithmetic number, because the mean of its divisors is an integer number (4545386289).

Almost surely, 2^12121030102 is an apocalyptic number.

12121030102 is a deficient number, since it is larger than the sum of its proper divisors (6060515054).

12121030102 is an equidigital number, since it uses as much as digits as its factorization.

12121030102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060515053.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12121030102 its reverse (20103012121), we get a palindrome (32224042223).

The spelling of 12121030102 in words is "twelve billion, one hundred twenty-one million, thirty thousand, one hundred two".