111012221011 has 2 divisors, whose sum is σ = 111012221012. Its totient is φ = 111012221010.

The previous prime is 111012220993. The next prime is 111012221017. The reversal of 111012221011 is 110122210111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111012221011 - 2¹¹ = 111012218963 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111012220982 and 111012221000.

It is not a weakly prime, because it can be changed into another prime (111012221017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55506110505 + 55506110506.

It is an arithmetic number, because the mean of its divisors is an integer number (55506110506).

Almost surely, 2^111012221011 is an apocalyptic number.

111012221011 is a deficient number, since it is larger than the sum of its proper divisors (1).

111012221011 is an equidigital number, since it uses as much as digits as its factorization.

111012221011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111012221011 its reverse (110122210111), we get a palindrome (221134431122).

The spelling of 111012221011 in words is "one hundred eleven billion, twelve million, two hundred twenty-one thousand, eleven".