111311233211 has 2 divisors, whose sum is σ = 111311233212. Its totient is φ = 111311233210.

The previous prime is 111311233153. The next prime is 111311233219. The reversal of 111311233211 is 112332113111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111311233211 is a prime.

It is not a weakly prime, because it can be changed into another prime (111311233219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55655616605 + 55655616606.

It is an arithmetic number, because the mean of its divisors is an integer number (55655616606).

Almost surely, 2^111311233211 is an apocalyptic number.

111311233211 is a deficient number, since it is larger than the sum of its proper divisors (1).

111311233211 is an equidigital number, since it uses as much as digits as its factorization.

111311233211 is an evil number, because the sum of its binary digits is even.

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

Adding to 111311233211 its reverse (112332113111), we get a palindrome (223643346322).

The spelling of 111311233211 in words is "one hundred eleven billion, three hundred eleven million, two hundred thirty-three thousand, two hundred eleven".