111122002111 has 4 divisors (see below), whose sum is σ = 112644221392. Its totient is φ = 109599782832.

The previous prime is 111122002109. The next prime is 111122002139. The reversal of 111122002111 is 111200221111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111200221111 = 7 ⋅15885745873.

It is a cyclic number.

It is not a de Polignac number, because 111122002111 - 2¹ = 111122002109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111122002091 and 111122002100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122002181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761109531 + ... + 761109676.

It is an arithmetic number, because the mean of its divisors is an integer number (28161055348).

Almost surely, 2^111122002111 is an apocalyptic number.

111122002111 is a deficient number, since it is larger than the sum of its proper divisors (1522219281).

111122002111 is an equidigital number, since it uses as much as digits as its factorization.

111122002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522219280.

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

Adding to 111122002111 its reverse (111200221111), we get a palindrome (222322223222).

The spelling of 111122002111 in words is "one hundred eleven billion, one hundred twenty-two million, two thousand, one hundred eleven".