1100022220 has 24 divisors (see below), whose sum is σ = 2520051408. Its totient is φ = 400008000.

The previous prime is 1100022199. The next prime is 1100022299. The reversal of 1100022220 is 222200011.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1100022197 and 1100022206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2499831 + ... + 2500270.

It is an arithmetic number, because the mean of its divisors is an integer number (105002142).

Almost surely, 2^1100022220 is an apocalyptic number.

1100022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100022220 is an abundant number, since it is smaller than the sum of its proper divisors (1420029188).

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

1100022220 is a wasteful number, since it uses less digits than its factorization.

1100022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000121 (or 5000119 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1100022220 is about 33166.5828809662. The cubic root of 1100022220 is about 1032.2870660957.

Adding to 1100022220 its reverse (222200011), we get a palindrome (1322222231).

The spelling of 1100022220 in words is "one billion, one hundred million, twenty-two thousand, two hundred twenty".