12102220010021 has 4 divisors (see below), whose sum is σ = 12102923358432. Its totient is φ = 12101516661612.

The previous prime is 12102220010017. The next prime is 12102220010113. The reversal of 12102220010021 is 12001002220121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12102220010021 - 2² = 12102220010017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12102220009978 and 12102220010005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102220010921) 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, 351648395 + ... + 351682808.

It is an arithmetic number, because the mean of its divisors is an integer number (3025730839608).

Almost surely, 2^{12102220010021} is an apocalyptic number.

It is an amenable number.

12102220010021 is a deficient number, since it is larger than the sum of its proper divisors (703348411).

12102220010021 is an equidigital number, since it uses as much as digits as its factorization.

12102220010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703348410.

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

Adding to 12102220010021 its reverse (12001002220121), we get a palindrome (24103222230142).

The spelling of 12102220010021 in words is "twelve trillion, one hundred two billion, two hundred twenty million, ten thousand, twenty-one".