11222111122 has 4 divisors (see below), whose sum is σ = 16833166686. Its totient is φ = 5611055560.

The previous prime is 11222111093. The next prime is 11222111143. The reversal of 11222111122 is 22111122211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22111122211 = 1901 ⋅11631311.

It can be written as a sum of positive squares in only one way, i.e., 11021010361 + 201100761 = 104981^2 + 14181^2 .

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 11222111096 and 11222111105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2805527779 + ... + 2805527782.

Almost surely, 2^11222111122 is an apocalyptic number.

11222111122 is a deficient number, since it is larger than the sum of its proper divisors (5611055564).

11222111122 is an equidigital number, since it uses as much as digits as its factorization.

11222111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5611055563.

The product of its digits is 32, while the sum is 16.

Adding to 11222111122 its reverse (22111122211), we get a palindrome (33333233333).

The spelling of 11222111122 in words is "eleven billion, two hundred twenty-two million, one hundred eleven thousand, one hundred twenty-two".