2021322121311 has 8 divisors (see below), whose sum is σ = 2767936598704. Its totient is φ = 1311127862400.

The previous prime is 2021322121303. The next prime is 2021322121327. The reversal of 2021322121311 is 1131212231202.

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

It is not a de Polignac number, because 2021322121311 - 2³ = 2021322121303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021322121211) 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, 9105054490 + ... + 9105054711.

It is an arithmetic number, because the mean of its divisors is an integer number (345992074838).

Almost surely, 2^{2021322121311} is an apocalyptic number.

2021322121311 is a deficient number, since it is larger than the sum of its proper divisors (746614477393).

2021322121311 is a wasteful number, since it uses less digits than its factorization.

2021322121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18210109241.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2021322121311 its reverse (1131212231202), we get a palindrome (3152534352513).

The spelling of 2021322121311 in words is "two trillion, twenty-one billion, three hundred twenty-two million, one hundred twenty-one thousand, three hundred eleven".