3121420220 has 48 divisors (see below), whose sum is σ = 6787519200. Its totient is φ = 1204358400.

The previous prime is 3121420219. The next prime is 3121420223. The reversal of 3121420220 is 220241213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121420223) 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, 839726 + ... + 843434.

It is an arithmetic number, because the mean of its divisors is an integer number (141406650).

Almost surely, 2^3121420220 is an apocalyptic number.

It is an amenable number.

3121420220 is an abundant number, since it is smaller than the sum of its proper divisors (3666098980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3121420220 is a wasteful number, since it uses less digits than its factorization.

3121420220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5198 (or 5196 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 3121420220 is about 55869.6717369988. The cubic root of 3121420220 is about 1461.4503976586.

Adding to 3121420220 its reverse (220241213), we get a palindrome (3341661433).

The spelling of 3121420220 in words is "three billion, one hundred twenty-one million, four hundred twenty thousand, two hundred twenty".