1100100220 has 12 divisors (see below), whose sum is σ = 2310210504. Its totient is φ = 440040080.

The previous prime is 1100100191. The next prime is 1100100223. The reversal of 1100100220 is 220010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100100223) 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 3 ways as a sum of consecutive naturals, for example, 27502486 + ... + 27502525.

It is an arithmetic number, because the mean of its divisors is an integer number (192517542).

Almost surely, 2^1100100220 is an apocalyptic number.

1100100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100100220 is an abundant number, since it is smaller than the sum of its proper divisors (1210110284).

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

1100100220 is a wasteful number, since it uses less digits than its factorization.

1100100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55005020 (or 55005018 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1100100220 is about 33167.7587424897. The cubic root of 1100100220 is about 1032.3114645386.

Adding to 1100100220 its reverse (220010011), we get a palindrome (1320110231).

The spelling of 1100100220 in words is "one billion, one hundred million, one hundred thousand, two hundred twenty".