12520350401 has 16 divisors (see below), whose sum is σ = 13923786240. Its totient is φ = 11180108160.

The previous prime is 12520350389. The next prime is 12520350407. The reversal of 12520350401 is 10405302521.

It is not a de Polignac number, because 12520350401 - 2²² = 12516156097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12520350407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1514786 + ... + 1523028.

It is an arithmetic number, because the mean of its divisors is an integer number (870236640).

Almost surely, 2^12520350401 is an apocalyptic number.

It is an amenable number.

12520350401 is a deficient number, since it is larger than the sum of its proper divisors (1403435839).

12520350401 is a wasteful number, since it uses less digits than its factorization.

12520350401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12056.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 12520350401 its reverse (10405302521), we get a palindrome (22925652922).

The spelling of 12520350401 in words is "twelve billion, five hundred twenty million, three hundred fifty thousand, four hundred one".