3031220121 has 16 divisors (see below), whose sum is σ = 4073926080. Its totient is φ = 2004687360.

The previous prime is 3031220069. The next prime is 3031220177. The reversal of 3031220121 is 1210221303.

It is not a de Polignac number, because 3031220121 - 2¹⁰ = 3031219097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3031220121.

It is not an unprimeable number, because it can be changed into a prime (3031220321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 779101 + ... + 782981.

It is an arithmetic number, because the mean of its divisors is an integer number (254620380).

Almost surely, 2^3031220121 is an apocalyptic number.

It is an amenable number.

3031220121 is a deficient number, since it is larger than the sum of its proper divisors (1042705959).

3031220121 is a wasteful number, since it uses less digits than its factorization.

3031220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5896.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 3031220121 is about 55056.5175160943. The cubic root of 3031220121 is about 1447.2353378564.

Adding to 3031220121 its reverse (1210221303), we get a palindrome (4241441424).

The spelling of 3031220121 in words is "three billion, thirty-one million, two hundred twenty thousand, one hundred twenty-one".