12521234330 has 64 divisors (see below), whose sum is σ = 24900680448. Its totient is φ = 4495349760.

The previous prime is 12521234311. The next prime is 12521234333. The reversal of 12521234330 is 3343212521.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12521234330.

It is not an unprimeable number, because it can be changed into a prime (12521234333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5365844 + ... + 5368176.

It is an arithmetic number, because the mean of its divisors is an integer number (389073132).

Almost surely, 2^12521234330 is an apocalyptic number.

12521234330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12521234330 is a deficient number, since it is larger than the sum of its proper divisors (12379446118).

12521234330 is a wasteful number, since it uses less digits than its factorization.

12521234330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 12521234330 its reverse (3343212521), we get a palindrome (15864446851).

The spelling of 12521234330 in words is "twelve billion, five hundred twenty-one million, two hundred thirty-four thousand, three hundred thirty".