111122101221011 has 4 divisors (see below), whose sum is σ = 111124127166024. Its totient is φ = 111120075276000.

The previous prime is 111122101220981. The next prime is 111122101221023. The reversal of 111122101221011 is 110122101221111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111122101221011 is a prime.

It is a super-2 number, since 2×111122101221011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111122101226011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1012890230 + ... + 1012999931.

It is an arithmetic number, because the mean of its divisors is an integer number (27781031791506).

Almost surely, 2^{111122101221011} is an apocalyptic number.

111122101221011 is a deficient number, since it is larger than the sum of its proper divisors (2025945013).

111122101221011 is an equidigital number, since it uses as much as digits as its factorization.

111122101221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025945012.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111122101221011 its reverse (110122101221111), we get a palindrome (221244202442122).

The spelling of 111122101221011 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred one million, two hundred twenty-one thousand, eleven".