3101223221 has 4 divisors (see below), whose sum is σ = 3113578944. Its totient is φ = 3088867500.

The previous prime is 3101223217. The next prime is 3101223247. The reversal of 3101223221 is 1223221013.

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 3101223221 - 2² = 3101223217 is a prime.

It is a super-2 number, since 2×3101223221² = 19235170932939229682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3101223221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3101229221) 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, 6177485 + ... + 6177986.

It is an arithmetic number, because the mean of its divisors is an integer number (778394736).

Almost surely, 2^3101223221 is an apocalyptic number.

It is an amenable number.

3101223221 is a deficient number, since it is larger than the sum of its proper divisors (12355723).

3101223221 is a wasteful number, since it uses less digits than its factorization.

3101223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12355722.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3101223221 is about 55688.6273937507. The cubic root of 3101223221 is about 1458.2914932112.

Adding to 3101223221 its reverse (1223221013), we get a palindrome (4324444234).

The spelling of 3101223221 in words is "three billion, one hundred one million, two hundred twenty-three thousand, two hundred twenty-one".