11122011111 has 16 divisors (see below), whose sum is σ = 15164961920. Its totient is φ = 7248359520.

The previous prime is 11122011107. The next prime is 11122011127. The reversal of 11122011111 is 11111022111.

It is not a de Polignac number, because 11122011111 - 2² = 11122011107 is a prime.

It is a super-3 number, since 3×11122011111³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122011161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156601 + ... + 216258.

It is an arithmetic number, because the mean of its divisors is an integer number (947810120).

Almost surely, 2^11122011111 is an apocalyptic number.

11122011111 is a deficient number, since it is larger than the sum of its proper divisors (4042950809).

11122011111 is a wasteful number, since it uses less digits than its factorization.

11122011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373086.

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

Adding to 11122011111 its reverse (11111022111), we get a palindrome (22233033222).

The spelling of 11122011111 in words is "eleven billion, one hundred twenty-two million, eleven thousand, one hundred eleven".