11222002220 has 216 divisors, whose sum is σ = 29293252128. Its totient is φ = 3600030720.

The previous prime is 11222002163. The next prime is 11222002237. The reversal of 11222002220 is 2220022211.

It is a junction number, because it is equal to n+sod(n) for n = 11222002195 and 11222002204.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9405944 + ... + 9407136.

It is an arithmetic number, because the mean of its divisors is an integer number (135616908).

Almost surely, 2^11222002220 is an apocalyptic number.

11222002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11222002220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14646626064).

11222002220 is an abundant number, since it is smaller than the sum of its proper divisors (18071249908).

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

11222002220 is a wasteful number, since it uses less digits than its factorization.

11222002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273 (or 1247 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 11222002220 its reverse (2220022211), we get a palindrome (13442024431).

It can be divided in two parts, 1 and 1222002220, that added together give a palindrome (1222002221).

The spelling of 11222002220 in words is "eleven billion, two hundred twenty-two million, two thousand, two hundred twenty".