12562121401 has 4 divisors (see below), whose sum is σ = 12564903312. Its totient is φ = 12559339492.

The previous prime is 12562121357. The next prime is 12562121419. The reversal of 12562121401 is 10412126521.

12562121401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12562121401 - 2⁹ = 12562120889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12562121431) 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, 1384171 + ... + 1393216.

It is an arithmetic number, because the mean of its divisors is an integer number (3141225828).

Almost surely, 2^12562121401 is an apocalyptic number.

It is an amenable number.

12562121401 is a deficient number, since it is larger than the sum of its proper divisors (2781911).

12562121401 is an equidigital number, since it uses as much as digits as its factorization.

12562121401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781910.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 12562121401 its reverse (10412126521), we get a palindrome (22974247922).

The spelling of 12562121401 in words is "twelve billion, five hundred sixty-two million, one hundred twenty-one thousand, four hundred one".