1331211223103 has 4 divisors (see below), whose sum is σ = 1331279130480. Its totient is φ = 1331143315728.

The previous prime is 1331211223093. The next prime is 1331211223141. The reversal of 1331211223103 is 3013221121331.

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 1331211223103 - 2¹⁰ = 1331211222079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331211223003) 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, 33924275 + ... + 33963492.

It is an arithmetic number, because the mean of its divisors is an integer number (332819782620).

Almost surely, 2^{1331211223103} is an apocalyptic number.

1331211223103 is a deficient number, since it is larger than the sum of its proper divisors (67907377).

1331211223103 is an equidigital number, since it uses as much as digits as its factorization.

1331211223103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67907376.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1331211223103 its reverse (3013221121331), we get a palindrome (4344432344434).

The spelling of 1331211223103 in words is "one trillion, three hundred thirty-one billion, two hundred eleven million, two hundred twenty-three thousand, one hundred three".