3122121013 has 48 divisors (see below), whose sum is σ = 3675632688. Its totient is φ = 2645913600.

The previous prime is 3122120977. The next prime is 3122121061. The reversal of 3122121013 is 3101212213.

It can be written as a sum of positive squares in 8 ways, for example, as 99540529 + 3022580484 = 9977^2 + 54978^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3122121013 is a prime.

It is a super-2 number, since 2×3122121013² = 19495279239632292338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3122121313) 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 47 ways as a sum of consecutive naturals, for example, 13399545 + ... + 13399777.

It is an arithmetic number, because the mean of its divisors is an integer number (76575681).

Almost surely, 2^3122121013 is an apocalyptic number.

It is an amenable number.

3122121013 is a deficient number, since it is larger than the sum of its proper divisors (553511675).

3122121013 is a wasteful number, since it uses less digits than its factorization.

3122121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3122121013 is about 55875.9430613927. The cubic root of 3122121013 is about 1461.5597600107.

Adding to 3122121013 its reverse (3101212213), we get a palindrome (6223333226).

The spelling of 3122121013 in words is "three billion, one hundred twenty-two million, one hundred twenty-one thousand, thirteen".