20210021012001 has 4 divisors (see below), whose sum is σ = 26946694682672. Its totient is φ = 13473347341332.

The previous prime is 20210021011933. The next prime is 20210021012017. The reversal of 20210021012001 is 10021012001202.

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 not a de Polignac number, because 20210021012001 - 2²¹ = 20210018914849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20210021012501) 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, 3368336835331 + ... + 3368336835336.

It is an arithmetic number, because the mean of its divisors is an integer number (6736673670668).

Almost surely, 2^{20210021012001} is an apocalyptic number.

It is an amenable number.

20210021012001 is a deficient number, since it is larger than the sum of its proper divisors (6736673670671).

20210021012001 is an equidigital number, since it uses as much as digits as its factorization.

20210021012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736673670670.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20210021012001 its reverse (10021012001202), we get a palindrome (30231033013203).

It can be divided in two parts, 202 and 10021012001, that multiplied together give a palindrome (2024244424202).

The spelling of 20210021012001 in words is "twenty trillion, two hundred ten billion, twenty-one million, twelve thousand, one".