2020122001021 has 4 divisors (see below), whose sum is σ = 2021398137792. Its totient is φ = 2018845864252.

The previous prime is 2020122000791. The next prime is 2020122001069. The reversal of 2020122001021 is 1201002210202.

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 2020122001021 - 2²⁷ = 2019987783293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020122000992 and 2020122001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020122001091) 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, 638066011 + ... + 638069176.

It is an arithmetic number, because the mean of its divisors is an integer number (505349534448).

Almost surely, 2^{2020122001021} is an apocalyptic number.

It is an amenable number.

2020122001021 is a deficient number, since it is larger than the sum of its proper divisors (1276136771).

2020122001021 is a wasteful number, since it uses less digits than its factorization.

2020122001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276136770.

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

Adding to 2020122001021 its reverse (1201002210202), we get a palindrome (3221124211223).

The spelling of 2020122001021 in words is "two trillion, twenty billion, one hundred twenty-two million, one thousand, twenty-one".