1100202220 has 48 divisors (see below), whose sum is σ = 2619116640. Its totient is φ = 384846336.

The previous prime is 1100202197. The next prime is 1100202221. The reversal of 1100202220 is 222020011.

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 = 1100202197 and 1100202206.

It is not an unprimeable number, because it can be changed into a prime (1100202221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106417 + ... + 116296.

It is an arithmetic number, because the mean of its divisors is an integer number (54564930).

Almost surely, 2^1100202220 is an apocalyptic number.

1100202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100202220 is an abundant number, since it is smaller than the sum of its proper divisors (1518914420).

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

1100202220 is a wasteful number, since it uses less digits than its factorization.

1100202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222754 (or 222752 counting only the distinct ones).

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

The square root of 1100202220 is about 33169.2963446619. The cubic root of 1100202220 is about 1032.3433684547.

Adding to 1100202220 its reverse (222020011), we get a palindrome (1322222231).

The spelling of 1100202220 in words is "one billion, one hundred million, two hundred two thousand, two hundred twenty".