1111220111803 has 2 divisors, whose sum is σ = 1111220111804. Its totient is φ = 1111220111802.

The previous prime is 1111220111699. The next prime is 1111220111857. The reversal of 1111220111803 is 3081110221111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1111220111803 - 2³⁷ = 973781158331 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111220111863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555610055901 + 555610055902.

It is an arithmetic number, because the mean of its divisors is an integer number (555610055902).

Almost surely, 2^{1111220111803} is an apocalyptic number.

1111220111803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111220111803 is an equidigital number, since it uses as much as digits as its factorization.

1111220111803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 22.

Adding to 1111220111803 its reverse (3081110221111), we get a palindrome (4192330332914).

The spelling of 1111220111803 in words is "one trillion, one hundred eleven billion, two hundred twenty million, one hundred eleven thousand, eight hundred three".