3001222221 has 4 divisors (see below), whose sum is σ = 4001629632. Its totient is φ = 2000814812.

The previous prime is 3001222199. The next prime is 3001222249. The reversal of 3001222221 is 1222221003.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1222221003 = 3 ⋅407407001.

It is a cyclic number.

It is not a de Polignac number, because 3001222221 - 2¹⁸ = 3000960077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3001222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3001222261) 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, 500203701 + ... + 500203706.

It is an arithmetic number, because the mean of its divisors is an integer number (1000407408).

Almost surely, 2^3001222221 is an apocalyptic number.

It is an amenable number.

3001222221 is a deficient number, since it is larger than the sum of its proper divisors (1000407411).

3001222221 is a wasteful number, since it uses less digits than its factorization.

3001222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000407410.

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

The square root of 3001222221 is about 54783.4119145568. The cubic root of 3001222221 is about 1442.4454045720.

Adding to 3001222221 its reverse (1222221003), we get a palindrome (4223443224).

The spelling of 3001222221 in words is "three billion, one million, two hundred twenty-two thousand, two hundred twenty-one".