12521213330454 has 48 divisors (see below), whose sum is σ = 28042955566080. Its totient is φ = 4033545096240.

The previous prime is 12521213330453. The next prime is 12521213330467. The reversal of 12521213330454 is 45403331212521.

12521213330454 is a `hidden beast` number, since 1 + 2 + 5 + 212 + 133 + 304 + 5 + 4 = 666.

It is a super-2 number, since 2×12521213330454² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12521213330453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15027244 + ... + 15838575.

It is an arithmetic number, because the mean of its divisors is an integer number (584228240960).

Almost surely, 2^{12521213330454} is an apocalyptic number.

12521213330454 is an abundant number, since it is smaller than the sum of its proper divisors (15521742235626).

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

12521213330454 is a wasteful number, since it uses less digits than its factorization.

12521213330454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30866585 (or 30866582 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 12521213330454 its reverse (45403331212521), we get a palindrome (57924544542975).

The spelling of 12521213330454 in words is "twelve trillion, five hundred twenty-one billion, two hundred thirteen million, three hundred thirty thousand, four hundred fifty-four".