521321124612 has 24 divisors (see below), whose sum is σ = 1244704701856. Its totient is φ = 169732459008.

The previous prime is 521321124563. The next prime is 521321124631. The reversal of 521321124612 is 216421123125.

It is a self number, because there is not a number n which added to its sum of digits gives 521321124612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505155613 + ... + 505156644.

Almost surely, 2^521321124612 is an apocalyptic number.

It is an amenable number.

521321124612 is an abundant number, since it is smaller than the sum of its proper divisors (723383577244).

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

521321124612 is a wasteful number, since it uses less digits than its factorization.

521321124612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010312307 (or 1010312305 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

Adding to 521321124612 its reverse (216421123125), we get a palindrome (737742247737).

The spelling of 521321124612 in words is "five hundred twenty-one billion, three hundred twenty-one million, one hundred twenty-four thousand, six hundred twelve".