3221022013021 has 4 divisors (see below), whose sum is σ = 3221026220412. Its totient is φ = 3221017805632.

The previous prime is 3221022013007. The next prime is 3221022013031. The reversal of 3221022013021 is 1203102201223.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2975328307396 + 245693705625 = 1724914^2 + 495675^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221022013021 - 2¹⁹ = 3221021488733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3221022013021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221022013031) 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, 594406 + ... + 2606791.

It is an arithmetic number, because the mean of its divisors is an integer number (805256555103).

Almost surely, 2^{3221022013021} is an apocalyptic number.

It is an amenable number.

3221022013021 is a deficient number, since it is larger than the sum of its proper divisors (4207391).

3221022013021 is a wasteful number, since it uses less digits than its factorization.

3221022013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207390.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 3221022013021 its reverse (1203102201223), we get a palindrome (4424124214244).

The spelling of 3221022013021 in words is "three trillion, two hundred twenty-one billion, twenty-two million, thirteen thousand, twenty-one".