3201120221 has 4 divisors (see below), whose sum is σ = 3447360252. Its totient is φ = 2954880192.

The previous prime is 3201120203. The next prime is 3201120229. The reversal of 3201120221 is 1220211023.

It is a happy number.

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 155625625 + 3045494596 = 12475^2 + 55186^2 .

It is a cyclic number.

It is not a de Polignac number, because 3201120221 - 2¹⁸ = 3200858077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3201120196 and 3201120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201120229) 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, 123119996 + ... + 123120021.

It is an arithmetic number, because the mean of its divisors is an integer number (861840063).

Almost surely, 2^3201120221 is an apocalyptic number.

It is an amenable number.

3201120221 is a deficient number, since it is larger than the sum of its proper divisors (246240031).

3201120221 is a wasteful number, since it uses less digits than its factorization.

3201120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246240030.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 3201120221 is about 56578.4430768469. The cubic root of 3201120221 is about 1473.7845347884.

Adding to 3201120221 its reverse (1220211023), we get a palindrome (4421331244).

The spelling of 3201120221 in words is "three billion, two hundred one million, one hundred twenty thousand, two hundred twenty-one".