1321223013103 has 4 divisors (see below), whose sum is σ = 1509969157840. Its totient is φ = 1132476868368.

The previous prime is 1321223013101. The next prime is 1321223013119. The reversal of 1321223013103 is 3013103221231.

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 1321223013103 - 2¹ = 1321223013101 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 (1321223013101) 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, 94373072358 + ... + 94373072371.

It is an arithmetic number, because the mean of its divisors is an integer number (377492289460).

Almost surely, 2^{1321223013103} is an apocalyptic number.

1321223013103 is a deficient number, since it is larger than the sum of its proper divisors (188746144737).

1321223013103 is an equidigital number, since it uses as much as digits as its factorization.

1321223013103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188746144736.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1321223013103 its reverse (3013103221231), we get a palindrome (4334326234334).

The spelling of 1321223013103 in words is "one trillion, three hundred twenty-one billion, two hundred twenty-three million, thirteen thousand, one hundred three".