3221901 has 6 divisors (see below), whose sum is σ = 4653870. Its totient is φ = 2147928.

The previous prime is 3221899. The next prime is 3221917. The reversal of 3221901 is 1091223.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1887876 + 1334025 = 1374^2 + 1155^2 .

It is not a de Polignac number, because 3221901 - 2¹ = 3221899 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178986 + ... + 179003.

It is an arithmetic number, because the mean of its divisors is an integer number (775645).

Almost surely, 2^3221901 is an apocalyptic number.

It is an amenable number.

3221901 is a deficient number, since it is larger than the sum of its proper divisors (1431969).

3221901 is a wasteful number, since it uses less digits than its factorization.

3221901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357995 (or 357992 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 3221901 is about 1794.9654592777. The cubic root of 3221901 is about 147.6966791199.

The spelling of 3221901 in words is "three million, two hundred twenty-one thousand, nine hundred one".