111010011211811 has 2 divisors, whose sum is σ = 111010011211812. Its totient is φ = 111010011211810.

The previous prime is 111010011211793. The next prime is 111010011211889. The reversal of 111010011211811 is 118112110010111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111010011211811 - 2¹⁸ = 111010010949667 is a prime.

It is a super-3 number, since 3×111010011211811³ (a number of 43 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (111010016211811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505005605905 + 55505005605906.

It is an arithmetic number, because the mean of its divisors is an integer number (55505005605906).

Almost surely, 2^{111010011211811} is an apocalyptic number.

111010011211811 is a deficient number, since it is larger than the sum of its proper divisors (1).

111010011211811 is an equidigital number, since it uses as much as digits as its factorization.

111010011211811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 20.

Adding to 111010011211811 its reverse (118112110010111), we get a palindrome (229122121221922).

The spelling of 111010011211811 in words is "one hundred eleven trillion, ten billion, eleven million, two hundred eleven thousand, eight hundred eleven".