12331545404401 has 4 divisors (see below), whose sum is σ = 12338011869552. Its totient is φ = 12325078939252.

The previous prime is 12331545404383. The next prime is 12331545404407. The reversal of 12331545404401 is 10440454513321.

It is a happy number.

12331545404401 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 12331545404401 - 2⁹ = 12331545403889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12331545404407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3233229715 + ... + 3233233528.

It is an arithmetic number, because the mean of its divisors is an integer number (3084502967388).

Almost surely, 2^{12331545404401} is an apocalyptic number.

It is an amenable number.

12331545404401 is a deficient number, since it is larger than the sum of its proper divisors (6466465151).

12331545404401 is an equidigital number, since it uses as much as digits as its factorization.

12331545404401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6466465150.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 12331545404401 its reverse (10440454513321), we get a palindrome (22771999917722).

The spelling of 12331545404401 in words is "twelve trillion, three hundred thirty-one billion, five hundred forty-five million, four hundred four thousand, four hundred one".