3220202121 has 4 divisors (see below), whose sum is σ = 4293602832. Its totient is φ = 2146801412.

The previous prime is 3220202119. The next prime is 3220202149. The reversal of 3220202121 is 1212020223.

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 3220202121 - 2¹ = 3220202119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3220202121.

It is not an unprimeable number, because it can be changed into a prime (3220202171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536700351 + ... + 536700356.

It is an arithmetic number, because the mean of its divisors is an integer number (1073400708).

Almost surely, 2^3220202121 is an apocalyptic number.

It is an amenable number.

3220202121 is a deficient number, since it is larger than the sum of its proper divisors (1073400711).

3220202121 is a wasteful number, since it uses less digits than its factorization.

3220202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073400710.

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

The square root of 3220202121 is about 56746.8247657964. The cubic root of 3220202121 is about 1476.7071485204.

Adding to 3220202121 its reverse (1212020223), we get a palindrome (4432222344).

The spelling of 3220202121 in words is "three billion, two hundred twenty million, two hundred two thousand, one hundred twenty-one".