5121133354521 has 64 divisors (see below), whose sum is σ = 7664564160000. Its totient is φ = 3379358361600.

The previous prime is 5121133354511. The next prime is 5121133354573. The reversal of 5121133354521 is 1254533311215.

It is a happy number.

5121133354521 is a `hidden beast` number, since 5 + 12 + 113 + 3 + 3 + 5 + 4 + 521 = 666.

It is not a de Polignac number, because 5121133354521 - 2⁶ = 5121133354457 is a prime.

It is a super-2 number, since 2×5121133354521² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5121133354511) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 776043580 + ... + 776050178.

It is an arithmetic number, because the mean of its divisors is an integer number (119758815000).

Almost surely, 2^{5121133354521} is an apocalyptic number.

It is an amenable number.

5121133354521 is a deficient number, since it is larger than the sum of its proper divisors (2543430805479).

5121133354521 is a wasteful number, since it uses less digits than its factorization.

5121133354521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7551 (or 7545 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

Adding to 5121133354521 its reverse (1254533311215), we get a palindrome (6375666665736).

The spelling of 5121133354521 in words is "five trillion, one hundred twenty-one billion, one hundred thirty-three million, three hundred fifty-four thousand, five hundred twenty-one".