12002020102021 has 4 divisors (see below), whose sum is σ = 12002048380000. Its totient is φ = 12001991824044.

The previous prime is 12002020101997. The next prime is 12002020102117. The reversal of 12002020102021 is 12020102020021.

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.

It is a cyclic number.

It is not a de Polignac number, because 12002020102021 - 2³¹ = 11999872618373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12002020101992 and 12002020102010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002000102021) 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, 13492491 + ... + 14354488.

It is an arithmetic number, because the mean of its divisors is an integer number (3000512095000).

Almost surely, 2^{12002020102021} is an apocalyptic number.

It is an amenable number.

12002020102021 is a deficient number, since it is larger than the sum of its proper divisors (28277979).

12002020102021 is an equidigital number, since it uses as much as digits as its factorization.

12002020102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28277978.

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

Adding to 12002020102021 its reverse (12020102020021), we get a palindrome (24022122122042).

The spelling of 12002020102021 in words is "twelve trillion, two billion, twenty million, one hundred two thousand, twenty-one".