12102102121012 has 12 divisors (see below), whose sum is σ = 21178714803876. Its totient is φ = 6051040748480.

The previous prime is 12102102120967. The next prime is 12102102121019. The reversal of 12102102121012 is 21012120120121.

It can be written as a sum of positive squares in 2 ways, for example, as 8902847607696 + 3199254513316 = 2983764^2 + 1788646^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102102121019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460488 + ... + 4941280.

It is an arithmetic number, because the mean of its divisors is an integer number (1764892900323).

Almost surely, 2^{12102102121012} is an apocalyptic number.

It is an amenable number.

12102102121012 is a deficient number, since it is larger than the sum of its proper divisors (9076612682864).

12102102121012 is a wasteful number, since it uses less digits than its factorization.

12102102121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5156018 (or 5156016 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12102102121012 its reverse (21012120120121), we get a palindrome (33114222241133).

The spelling of 12102102121012 in words is "twelve trillion, one hundred two billion, one hundred two million, one hundred twenty-one thousand, twelve".