1231222104401 has 4 divisors (see below), whose sum is σ = 1231269596400. Its totient is φ = 1231174612404.

The previous prime is 1231222104377. The next prime is 1231222104443. The reversal of 1231222104401 is 1044012221321.

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 1231222104401 - 2⁶ = 1231222104337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1231222104451) 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 3 ways as a sum of consecutive naturals, for example, 23707091 + ... + 23758968.

It is an arithmetic number, because the mean of its divisors is an integer number (307817399100).

Almost surely, 2^{1231222104401} is an apocalyptic number.

It is an amenable number.

1231222104401 is a deficient number, since it is larger than the sum of its proper divisors (47491999).

1231222104401 is an equidigital number, since it uses as much as digits as its factorization.

1231222104401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47491998.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1231222104401 its reverse (1044012221321), we get a palindrome (2275234325722).

The spelling of 1231222104401 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-two million, one hundred four thousand, four hundred one".