12540305222401 has 8 divisors (see below), whose sum is σ = 14050071699264. Its totient is φ = 11092161867120.

The previous prime is 12540305222387. The next prime is 12540305222453. The reversal of 12540305222401 is 10422250304521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12540305222401 - 2⁹ = 12540305221889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12540305222461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15405779965 + ... + 15405780778.

It is an arithmetic number, because the mean of its divisors is an integer number (1756258962408).

Almost surely, 2^{12540305222401} is an apocalyptic number.

12540305222401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12540305222401 is a deficient number, since it is larger than the sum of its proper divisors (1509766476863).

12540305222401 is a wasteful number, since it uses less digits than its factorization.

12540305222401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30811560791.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 12540305222401 its reverse (10422250304521), we get a palindrome (22962555526922).

The spelling of 12540305222401 in words is "twelve trillion, five hundred forty billion, three hundred five million, two hundred twenty-two thousand, four hundred one".