111311212003 has 2 divisors, whose sum is σ = 111311212004. Its totient is φ = 111311212002.

The previous prime is 111311211959. The next prime is 111311212013. The reversal of 111311212003 is 300212113111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111311212003 - 2²⁹ = 110774341091 is a prime.

It is a super-2 number, since 2×111311212003² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111311212013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55655606001 + 55655606002.

It is an arithmetic number, because the mean of its divisors is an integer number (55655606002).

Almost surely, 2^111311212003 is an apocalyptic number.

111311212003 is a deficient number, since it is larger than the sum of its proper divisors (1).

111311212003 is an equidigital number, since it uses as much as digits as its factorization.

111311212003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111311212003 its reverse (300212113111), we get a palindrome (411523325114).

The spelling of 111311212003 in words is "one hundred eleven billion, three hundred eleven million, two hundred twelve thousand, three".