20021020211201 has 8 divisors (see below), whose sum is σ = 20033427470784. Its totient is φ = 20008616799600.

The previous prime is 20021020211197. The next prime is 20021020211239. The reversal of 20021020211201 is 10211202012002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20021020211201 - 2² = 20021020211197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021020211501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9482300 + ... + 11399826.

It is an arithmetic number, because the mean of its divisors is an integer number (2504178433848).

Almost surely, 2^{20021020211201} is an apocalyptic number.

It is an amenable number.

20021020211201 is a deficient number, since it is larger than the sum of its proper divisors (12407259583).

20021020211201 is a wasteful number, since it uses less digits than its factorization.

20021020211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923991.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20021020211201 its reverse (10211202012002), we get a palindrome (30232222223203).

The spelling of 20021020211201 in words is "twenty trillion, twenty-one billion, twenty million, two hundred eleven thousand, two hundred one".