3201022021 has 4 divisors (see below), whose sum is σ = 3389317452. Its totient is φ = 3012726592.

The previous prime is 3201021991. The next prime is 3201022037. The reversal of 3201022021 is 1202201023.

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 2281113121 + 919908900 = 47761^2 + 30330^2 .

It is a cyclic number.

It is not a de Polignac number, because 3201022021 - 2⁷ = 3201021893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3201021992 and 3201022010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201022061) 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, 94147690 + ... + 94147723.

It is an arithmetic number, because the mean of its divisors is an integer number (847329363).

Almost surely, 2^3201022021 is an apocalyptic number.

It is an amenable number.

3201022021 is a deficient number, since it is larger than the sum of its proper divisors (188295431).

3201022021 is a wasteful number, since it uses less digits than its factorization.

3201022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188295430.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 3201022021 is about 56577.5752485028. The cubic root of 3201022021 is about 1473.7694643223.

Adding to 3201022021 its reverse (1202201023), we get a palindrome (4403223044).

The spelling of 3201022021 in words is "three billion, two hundred one million, twenty-two thousand, twenty-one".