5122721281631 has 32 divisors (see below), whose sum is σ = 5326846187520. Its totient is φ = 4921209820800.

The previous prime is 5122721281619. The next prime is 5122721281637. The reversal of 5122721281631 is 1361821272215.

It is a happy number.

5122721281631 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 5122721281631 - 2⁶ = 5122721281567 is a prime.

It is a super-2 number, since 2×5122721281631² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5122721281637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3069334865 + ... + 3069336533.

It is an arithmetic number, because the mean of its divisors is an integer number (166463943360).

Almost surely, 2^{5122721281631} is an apocalyptic number.

5122721281631 is a deficient number, since it is larger than the sum of its proper divisors (204124905889).

5122721281631 is a wasteful number, since it uses less digits than its factorization.

5122721281631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135.

The product of its digits is 80640, while the sum is 41.

The spelling of 5122721281631 in words is "five trillion, one hundred twenty-two billion, seven hundred twenty-one million, two hundred eighty-one thousand, six hundred thirty-one".