1100221122 has 128 divisors (see below), whose sum is σ = 3034902528. Its totient is φ = 256608000.

The previous prime is 1100221097. The next prime is 1100221127. The reversal of 1100221122 is 2211220011.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 1100221098 and 1100221107.

It is not an unprimeable number, because it can be changed into a prime (1100221127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 219747 + ... + 224697.

It is an arithmetic number, because the mean of its divisors is an integer number (23710176).

Almost surely, 2^1100221122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100221122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1517451264).

1100221122 is an abundant number, since it is smaller than the sum of its proper divisors (1934681406).

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

1100221122 is a wasteful number, since it uses less digits than its factorization.

1100221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1100221122 is about 33169.5812756206. The cubic root of 1100221122 is about 1032.3492804717.

Adding to 1100221122 its reverse (2211220011), we get a palindrome (3311441133).

It can be divided in two parts, 1100 and 221122, that added together give a palindrome (222222).

The spelling of 1100221122 in words is "one billion, one hundred million, two hundred twenty-one thousand, one hundred twenty-two".