11211122122 has 16 divisors (see below), whose sum is σ = 17399412360. Its totient is φ = 5411381248.

The previous prime is 11211122119. The next prime is 11211122129. The reversal of 11211122122 is 22122111211.

It can be written as a sum of positive squares in 4 ways, for example, as 10461402961 + 749719161 = 102281^2 + 27381^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 11211122096 and 11211122105.

It is not an unprimeable number, because it can be changed into a prime (11211122129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469578 + ... + 492874.

Almost surely, 2^11211122122 is an apocalyptic number.

11211122122 is a deficient number, since it is larger than the sum of its proper divisors (6188290238).

11211122122 is a wasteful number, since it uses less digits than its factorization.

11211122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31625.

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

Adding to 11211122122 its reverse (22122111211), we get a palindrome (33333233333).

The spelling of 11211122122 in words is "eleven billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twenty-two".