12102020121010 has 48 divisors (see below), whose sum is σ = 24111455189976. Its totient is φ = 4357965269504.

The previous prime is 12102020120917. The next prime is 12102020121019. The reversal of 12102020121010 is 1012102020121.

It can be written as a sum of positive squares in 4 ways, for example, as 11755524248689 + 346495872321 = 3428633^2 + 588639^2 .

It is not an unprimeable number, because it can be changed into a prime (12102020121019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67195849 + ... + 67375708.

Almost surely, 2^{12102020121010} is an apocalyptic number.

12102020121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12102020121010 is a deficient number, since it is larger than the sum of its proper divisors (12009435068966).

12102020121010 is a wasteful number, since it uses less digits than its factorization.

12102020121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134571627 (or 134571604 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12102020121010 its reverse (1012102020121), we get a palindrome (13114122141131).

The spelling of 12102020121010 in words is "twelve trillion, one hundred two billion, twenty million, one hundred twenty-one thousand, ten".