3011221221 has 8 divisors (see below), whose sum is σ = 4040535264. Its totient is φ = 1994694000.

The previous prime is 3011221201. The next prime is 3011221231. The reversal of 3011221221 is 1221221103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3011221221 - 2¹⁰ = 3011220197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3011221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3011221201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3196155 + ... + 3197096.

It is an arithmetic number, because the mean of its divisors is an integer number (505066908).

Almost surely, 2^3011221221 is an apocalyptic number.

It is an amenable number.

3011221221 is a deficient number, since it is larger than the sum of its proper divisors (1029314043).

3011221221 is a wasteful number, since it uses less digits than its factorization.

3011221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6393411.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 3011221221 is about 54874.5954062533. The cubic root of 3011221221 is about 1444.0455330841.

Adding to 3011221221 its reverse (1221221103), we get a palindrome (4232442324).

The spelling of 3011221221 in words is "three billion, eleven million, two hundred twenty-one thousand, two hundred twenty-one".