3021221113021 has 4 divisors (see below), whose sum is σ = 3021235447932. Its totient is φ = 3021206778112.

The previous prime is 3021221112971. The next prime is 3021221113033. The reversal of 3021221113021 is 1203111221203.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1424953113796 + 1596267999225 = 1193714^2 + 1263435^2 .

It is a cyclic number.

It is not a de Polignac number, because 3021221113021 - 2¹⁷ = 3021220981949 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 3021221113021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3021221113081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6846526 + ... + 7274431.

It is an arithmetic number, because the mean of its divisors is an integer number (755308861983).

Almost surely, 2^{3021221113021} is an apocalyptic number.

It is an amenable number.

3021221113021 is a deficient number, since it is larger than the sum of its proper divisors (14334911).

3021221113021 is a wasteful number, since it uses less digits than its factorization.

3021221113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14334910.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 3021221113021 its reverse (1203111221203), we get a palindrome (4224332334224).

The spelling of 3021221113021 in words is "three trillion, twenty-one billion, two hundred twenty-one million, one hundred thirteen thousand, twenty-one".