5123322451421 has 12 divisors (see below), whose sum is σ = 5253453623796. Its totient is φ = 4996341396480.

The previous prime is 5123322451417. The next prime is 5123322451439. The reversal of 5123322451421 is 1241542233215.

It can be written as a sum of positive squares in 6 ways, for example, as 1638044179321 + 3485278272100 = 1279861^2 + 1866890^2 .

It is not a de Polignac number, because 5123322451421 - 2² = 5123322451417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5123321451421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3548621 + ... + 4779053.

It is an arithmetic number, because the mean of its divisors is an integer number (437787801983).

Almost surely, 2^{5123322451421} is an apocalyptic number.

It is an amenable number.

5123322451421 is a deficient number, since it is larger than the sum of its proper divisors (130131172375).

5123322451421 is a wasteful number, since it uses less digits than its factorization.

5123322451421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232992 (or 1232951 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

Adding to 5123322451421 its reverse (1241542233215), we get a palindrome (6364864684636).

The spelling of 5123322451421 in words is "five trillion, one hundred twenty-three billion, three hundred twenty-two million, four hundred fifty-one thousand, four hundred twenty-one".