11220012100 has 36 divisors (see below), whose sum is σ = 26560831248. Its totient is φ = 4080004000.

The previous prime is 11220012049. The next prime is 11220012131. The reversal of 11220012100 is 121002211.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5098906 + ... + 5101105.

It is an arithmetic number, because the mean of its divisors is an integer number (737800868).

Almost surely, 2^11220012100 is an apocalyptic number.

11220012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220012100 is an abundant number, since it is smaller than the sum of its proper divisors (15340819148).

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

11220012100 is a wasteful number, since it uses less digits than its factorization.

11220012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10200036 (or 10200029 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11220012100 its reverse (121002211), we get a palindrome (11341014311).

The spelling of 11220012100 in words is "eleven billion, two hundred twenty million, twelve thousand, one hundred".