12521481370 has 8 divisors (see below), whose sum is σ = 22538666484. Its totient is φ = 5008592544.

The previous prime is 12521481361. The next prime is 12521481373. The reversal of 12521481370 is 7318412521.

12521481370 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12219312681 + 302168689 = 110541^2 + 17383^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12521481373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626074059 + ... + 626074078.

Almost surely, 2^12521481370 is an apocalyptic number.

12521481370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12521481370 is a deficient number, since it is larger than the sum of its proper divisors (10017185114).

12521481370 is a wasteful number, since it uses less digits than its factorization.

12521481370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252148144.

The product of its (nonzero) digits is 13440, while the sum is 34.

Adding to 12521481370 its reverse (7318412521), we get a palindrome (19839893891).

The spelling of 12521481370 in words is "twelve billion, five hundred twenty-one million, four hundred eighty-one thousand, three hundred seventy".