1331201121223 has 4 divisors (see below), whose sum is σ = 1331255674008. Its totient is φ = 1331146568440.

The previous prime is 1331201121179. The next prime is 1331201121247. The reversal of 1331201121223 is 3221211021331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1331201121223 - 2¹³ = 1331201113031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331201121194 and 1331201121203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331201121323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27239773 + ... + 27288598.

It is an arithmetic number, because the mean of its divisors is an integer number (332813918502).

Almost surely, 2^{1331201121223} is an apocalyptic number.

1331201121223 is a deficient number, since it is larger than the sum of its proper divisors (54552785).

1331201121223 is an equidigital number, since it uses as much as digits as its factorization.

1331201121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54552784.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1331201121223 its reverse (3221211021331), we get a palindrome (4552412142554).

The spelling of 1331201121223 in words is "one trillion, three hundred thirty-one billion, two hundred one million, one hundred twenty-one thousand, two hundred twenty-three".