3201222021 has 4 divisors (see below), whose sum is σ = 4268296032. Its totient is φ = 2134148012.

The previous prime is 3201222007. The next prime is 3201222023. The reversal of 3201222021 is 1202221023.

It is a happy number.

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 3201222021 - 2⁶ = 3201221957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201222023) 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, 533537001 + ... + 533537006.

It is an arithmetic number, because the mean of its divisors is an integer number (1067074008).

Almost surely, 2^3201222021 is an apocalyptic number.

It is an amenable number.

3201222021 is a deficient number, since it is larger than the sum of its proper divisors (1067074011).

3201222021 is a wasteful number, since it uses less digits than its factorization.

3201222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067074010.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 3201222021 is about 56579.3427056200. The cubic root of 3201222021 is about 1473.8001574105.

Adding to 3201222021 its reverse (1202221023), we get a palindrome (4403443044).

The spelling of 3201222021 in words is "three billion, two hundred one million, two hundred twenty-two thousand, twenty-one".