12020213132021 has 4 divisors (see below), whose sum is σ = 12021188573472. Its totient is φ = 12019237690572.

The previous prime is 12020213131981. The next prime is 12020213132077. The reversal of 12020213132021 is 12023131202021.

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 12020213132021 - 2⁴² = 7622166620917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020213131984 and 12020213132002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020213132321) 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, 487702241 + ... + 487726886.

It is an arithmetic number, because the mean of its divisors is an integer number (3005297143368).

Almost surely, 2^{12020213132021} is an apocalyptic number.

It is an amenable number.

12020213132021 is a deficient number, since it is larger than the sum of its proper divisors (975441451).

12020213132021 is an equidigital number, since it uses as much as digits as its factorization.

12020213132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975441450.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12020213132021 its reverse (12023131202021), we get a palindrome (24043344334042).

The spelling of 12020213132021 in words is "twelve trillion, twenty billion, two hundred thirteen million, one hundred thirty-two thousand, twenty-one".