12521305010 has 8 divisors (see below), whose sum is σ = 22538349036. Its totient is φ = 5008522000.

The previous prime is 12521304997. The next prime is 12521305037. The reversal of 12521305010 is 1050312521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12165869401 + 355435609 = 110299^2 + 18853^2 .

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

It is a super-2 number, since 2×12521305010² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626065241 + ... + 626065260.

Almost surely, 2^12521305010 is an apocalyptic number.

12521305010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12521305010 is a deficient number, since it is larger than the sum of its proper divisors (10017044026).

12521305010 is a wasteful number, since it uses less digits than its factorization.

12521305010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252130508.

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 12521305010 its reverse (1050312521), we get a palindrome (13571617531).

The spelling of 12521305010 in words is "twelve billion, five hundred twenty-one million, three hundred five thousand, ten".