111122101011 has 4 divisors (see below), whose sum is σ = 148162801352. Its totient is φ = 74081400672.

The previous prime is 111122100979. The next prime is 111122101033. The reversal of 111122101011 is 110101221111.

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

It is not a de Polignac number, because 111122101011 - 2⁵ = 111122100979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111122101511) 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, 18520350166 + ... + 18520350171.

It is an arithmetic number, because the mean of its divisors is an integer number (37040700338).

Almost surely, 2^111122101011 is an apocalyptic number.

111122101011 is a deficient number, since it is larger than the sum of its proper divisors (37040700341).

111122101011 is an equidigital number, since it uses as much as digits as its factorization.

111122101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37040700340.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111122101011 its reverse (110101221111), we get a palindrome (221223322122).

The spelling of 111122101011 in words is "one hundred eleven billion, one hundred twenty-two million, one hundred one thousand, eleven".