1111103103221 has 4 divisors (see below), whose sum is σ = 1115203114944. Its totient is φ = 1107003091500.

The previous prime is 1111103103217. The next prime is 1111103103239. The reversal of 1111103103221 is 1223013011111.

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 1111103103221 - 2² = 1111103103217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111103103221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111103106221) 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, 2050005455 + ... + 2050005996.

It is an arithmetic number, because the mean of its divisors is an integer number (278800778736).

Almost surely, 2^{1111103103221} is an apocalyptic number.

It is an amenable number.

1111103103221 is a deficient number, since it is larger than the sum of its proper divisors (4100011723).

1111103103221 is an equidigital number, since it uses as much as digits as its factorization.

1111103103221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100011722.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1111103103221 its reverse (1223013011111), we get a palindrome (2334116114332).

The spelling of 1111103103221 in words is "one trillion, one hundred eleven billion, one hundred three million, one hundred three thousand, two hundred twenty-one".