12022002100021 has 4 divisors (see below), whose sum is σ = 12022009060672. Its totient is φ = 12021995139372.

The previous prime is 12022002100001. The next prime is 12022002100051. The reversal of 12022002100021 is 12000120022021.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12022002100021 - 2¹⁵ = 12022002067253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12022002099974 and 12022002100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022002100001) 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, 1288516 + ... + 5069938.

It is an arithmetic number, because the mean of its divisors is an integer number (3005502265168).

Almost surely, 2^{12022002100021} is an apocalyptic number.

It is an amenable number.

12022002100021 is a deficient number, since it is larger than the sum of its proper divisors (6960651).

12022002100021 is an equidigital number, since it uses as much as digits as its factorization.

12022002100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6960650.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12022002100021 its reverse (12000120022021), we get a palindrome (24022122122042).

The spelling of 12022002100021 in words is "twelve trillion, twenty-two billion, two million, one hundred thousand, twenty-one".