11221123122 has 96 divisors (see below), whose sum is σ = 28151323200. Its totient is φ = 3192514560.

The previous prime is 11221123117. The next prime is 11221123127. The reversal of 11221123122 is 22132112211.

It is an interprime number because it is at equal distance from previous prime (11221123117) and next prime (11221123127).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 = 11221123095 and 11221123104.

It is not an unprimeable number, because it can be changed into a prime (11221123127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1453629 + ... + 1461327.

It is an arithmetic number, because the mean of its divisors is an integer number (293242950).

Almost surely, 2^11221123122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11221123122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14075661600).

11221123122 is an abundant number, since it is smaller than the sum of its proper divisors (16930200078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11221123122 is a wasteful number, since it uses less digits than its factorization.

11221123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8168 (or 8165 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 11221123122 its reverse (22132112211), we get a palindrome (33353235333).

The spelling of 11221123122 in words is "eleven billion, two hundred twenty-one million, one hundred twenty-three thousand, one hundred twenty-two".