12102002102021 has 8 divisors (see below), whose sum is σ = 13036976652504. Its totient is φ = 11167606310400.

The previous prime is 12102002102009. The next prime is 12102002102107. The reversal of 12102002102021 is 12020120020121.

It can be written as a sum of positive squares in 4 ways, for example, as 240211732996 + 11861790369025 = 490114^2 + 3444095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12102002102021 - 2⁶ = 12102002101957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12102002101987 and 12102002102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102002152021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144646280 + ... + 144729921.

It is an arithmetic number, because the mean of its divisors is an integer number (1629622081563).

Almost surely, 2^{12102002102021} is an apocalyptic number.

It is an amenable number.

12102002102021 is a deficient number, since it is larger than the sum of its proper divisors (934974550483).

12102002102021 is a wasteful number, since it uses less digits than its factorization.

12102002102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289379431.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12102002102021 its reverse (12020120020121), we get a palindrome (24122122122142).

The spelling of 12102002102021 in words is "twelve trillion, one hundred two billion, two million, one hundred two thousand, twenty-one".