1111203311321 has 4 divisors (see below), whose sum is σ = 1111206469392. Its totient is φ = 1111200153252.

The previous prime is 1111203311303. The next prime is 1111203311341. The reversal of 1111203311321 is 1231133021111.

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 a de Polignac number, because none of the positive numbers 2^k-1111203311321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111203311293 and 1111203311302.

It is not an unprimeable number, because it can be changed into a prime (1111203311341) 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, 973955 + ... + 1780728.

It is an arithmetic number, because the mean of its divisors is an integer number (277801617348).

Almost surely, 2^{1111203311321} is an apocalyptic number.

It is an amenable number.

1111203311321 is a deficient number, since it is larger than the sum of its proper divisors (3158071).

1111203311321 is an equidigital number, since it uses as much as digits as its factorization.

1111203311321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158070.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1111203311321 its reverse (1231133021111), we get a palindrome (2342336332432).

The spelling of 1111203311321 in words is "one trillion, one hundred eleven billion, two hundred three million, three hundred eleven thousand, three hundred twenty-one".