12051521452520 has 64 divisors (see below), whose sum is σ = 29611100845440. Its totient is φ = 4377913120000.

The previous prime is 12051521452519. The next prime is 12051521452549. The reversal of 12051521452520 is 2525412515021.

It is a super-2 number, since 2×12051521452520² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13499231 + ... + 14364270.

It is an arithmetic number, because the mean of its divisors is an integer number (462673450710).

Almost surely, 2^{12051521452520} is an apocalyptic number.

12051521452520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12051521452520 is an abundant number, since it is smaller than the sum of its proper divisors (17559579392920).

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

12051521452520 is a wasteful number, since it uses less digits than its factorization.

12051521452520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27864506 (or 27864502 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 35.

Adding to 12051521452520 its reverse (2525412515021), we get a palindrome (14576933967541).

The spelling of 12051521452520 in words is "twelve trillion, fifty-one billion, five hundred twenty-one million, four hundred fifty-two thousand, five hundred twenty".