12251221442401 has 8 divisors (see below), whose sum is σ = 12276959662080. Its totient is φ = 12225483896832.

The previous prime is 12251221442347. The next prime is 12251221442407. The reversal of 12251221442401 is 10424412215221.

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 a de Polignac number, because none of the positive numbers 2^k-12251221442401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12251221442407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55407201 + ... + 55627873.

It is an arithmetic number, because the mean of its divisors is an integer number (1534619957760).

Almost surely, 2^{12251221442401} is an apocalyptic number.

It is an amenable number.

12251221442401 is a deficient number, since it is larger than the sum of its proper divisors (25738219679).

12251221442401 is a wasteful number, since it uses less digits than its factorization.

12251221442401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337055.

The product of its (nonzero) digits is 10240, while the sum is 31.

Adding to 12251221442401 its reverse (10424412215221), we get a palindrome (22675633657622).

The spelling of 12251221442401 in words is "twelve trillion, two hundred fifty-one billion, two hundred twenty-one million, four hundred forty-two thousand, four hundred one".