12521141454220 has 48 divisors (see below), whose sum is σ = 30208073269248. Its totient is φ = 4270486530240.

The previous prime is 12521141454197. The next prime is 12521141454229. The reversal of 12521141454220 is 2245414112521.

It is not an unprimeable number, because it can be changed into a prime (12521141454229) 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 15 ways as a sum of consecutive naturals, for example, 234100812 + ... + 234154291.

It is an arithmetic number, because the mean of its divisors is an integer number (629334859776).

Almost surely, 2^{12521141454220} is an apocalyptic number.

12521141454220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12521141454220 is an abundant number, since it is smaller than the sum of its proper divisors (17686931815028).

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

12521141454220 is a wasteful number, since it uses less digits than its factorization.

12521141454220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468255310 (or 468255308 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

Adding to 12521141454220 its reverse (2245414112521), we get a palindrome (14766555566741).

The spelling of 12521141454220 in words is "twelve trillion, five hundred twenty-one billion, one hundred forty-one million, four hundred fifty-four thousand, two hundred twenty".