3011201221 has 16 divisors (see below), whose sum is σ = 3459147264. Its totient is φ = 2567731824.

The previous prime is 3011201203. The next prime is 3011201243. The reversal of 3011201221 is 1221021103.

It is not a de Polignac number, because 3011201221 - 2²⁷ = 2876983493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3011201261) 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 15 ways as a sum of consecutive naturals, for example, 2303250 + ... + 2304556.

It is an arithmetic number, because the mean of its divisors is an integer number (216196704).

Almost surely, 2^3011201221 is an apocalyptic number.

It is an amenable number.

3011201221 is a deficient number, since it is larger than the sum of its proper divisors (447946043).

3011201221 is a wasteful number, since it uses less digits than its factorization.

3011201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 3011201221 is about 54874.4131722609. The cubic root of 3011201221 is about 1444.0423360451.

Adding to 3011201221 its reverse (1221021103), we get a palindrome (4232222324).

The spelling of 3011201221 in words is "three billion, eleven million, two hundred one thousand, two hundred twenty-one".