3221220001 has 4 divisors (see below), whose sum is σ = 3222471600. Its totient is φ = 3219968404.

The previous prime is 3221219983. The next prime is 3221220007. The reversal of 3221220001 is 1000221223.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3221220001 - 2¹³ = 3221211809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3221220007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621931 + ... + 627088.

It is an arithmetic number, because the mean of its divisors is an integer number (805617900).

Almost surely, 2^3221220001 is an apocalyptic number.

It is an amenable number.

3221220001 is a deficient number, since it is larger than the sum of its proper divisors (1251599).

3221220001 is a wasteful number, since it uses less digits than its factorization.

3221220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251598.

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

The square root of 3221220001 is about 56755.7926647140. The cubic root of 3221220001 is about 1476.8627238818.

Adding to 3221220001 its reverse (1000221223), we get a palindrome (4221441224).

The spelling of 3221220001 in words is "three billion, two hundred twenty-one million, two hundred twenty thousand, one".