12102021200121 has 32 divisors (see below), whose sum is σ = 16309238544000. Its totient is φ = 7981992245760.

The previous prime is 12102021200117. The next prime is 12102021200167. The reversal of 12102021200121 is 12100212020121.

12102021200121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12102021200121 - 2² = 12102021200117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12102021200121.

It is not an unprimeable number, because it can be changed into a prime (12102021207121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81174955 + ... + 81323903.

It is an arithmetic number, because the mean of its divisors is an integer number (509663704500).

Almost surely, 2^{12102021200121} is an apocalyptic number.

It is an amenable number.

12102021200121 is a deficient number, since it is larger than the sum of its proper divisors (4207217343879).

12102021200121 is a wasteful number, since it uses less digits than its factorization.

12102021200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149929.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12102021200121 its reverse (12100212020121), we get a palindrome (24202233220242).

The spelling of 12102021200121 in words is "twelve trillion, one hundred two billion, twenty-one million, two hundred thousand, one hundred twenty-one".