11203220100 has 72 divisors (see below), whose sum is σ = 32425563520. Its totient is φ = 2986519680.

The previous prime is 11203220051. The next prime is 11203220123. The reversal of 11203220100 is 102230211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1440021 + ... + 1447779.

Almost surely, 2^11203220100 is an apocalyptic number.

11203220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11203220100 is an abundant number, since it is smaller than the sum of its proper divisors (21222343420).

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

11203220100 is a wasteful number, since it uses less digits than its factorization.

11203220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12589 (or 12582 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 11203220100 its reverse (102230211), we get a palindrome (11305450311).

The spelling of 11203220100 in words is "eleven billion, two hundred three million, two hundred twenty thousand, one hundred".