521000300012012 has 24 divisors (see below), whose sum is σ = 951963946192896. Its totient is φ = 249024222385488.

The previous prime is 521000300011967. The next prime is 521000300012029. The reversal of 521000300012012 is 210210003000125.

It is a happy number.

It is a super-2 number, since 2×521000300012012² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1702506878 + ... + 1702812869.

It is an arithmetic number, because the mean of its divisors is an integer number (39665164424704).

Almost surely, 2^{521000300012012} is an apocalyptic number.

It is an amenable number.

521000300012012 is a deficient number, since it is larger than the sum of its proper divisors (430963646180884).

521000300012012 is a wasteful number, since it uses less digits than its factorization.

521000300012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3405321437 (or 3405321435 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 521000300012012 its reverse (210210003000125), we get a palindrome (731210303012137).

The spelling of 521000300012012 in words is "five hundred twenty-one trillion, three hundred million, twelve thousand, twelve".