1231344014221 has 4 divisors (see below), whose sum is σ = 1231584563200. Its totient is φ = 1231103465244.

The previous prime is 1231344014171. The next prime is 1231344014227. The reversal of 1231344014221 is 1224104431321.

It is a happy number.

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 1231344014221 - 2²⁷ = 1231209796493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231344014221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231344014227) 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, 120266811 + ... + 120277048.

It is an arithmetic number, because the mean of its divisors is an integer number (307896140800).

Almost surely, 2^{1231344014221} is an apocalyptic number.

It is an amenable number.

1231344014221 is a deficient number, since it is larger than the sum of its proper divisors (240548979).

1231344014221 is an equidigital number, since it uses as much as digits as its factorization.

1231344014221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240548978.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1231344014221 its reverse (1224104431321), we get a palindrome (2455448445542).

The spelling of 1231344014221 in words is "one trillion, two hundred thirty-one billion, three hundred forty-four million, fourteen thousand, two hundred twenty-one".