11209227900 has 144 divisors (see below), whose sum is σ = 36131541600. Its totient is φ = 2664023040.

The previous prime is 11209227881. The next prime is 11209227943. The reversal of 11209227900 is 972290211.

It is a super-3 number, since 3×11209227900³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63546 + ... + 162654.

Almost surely, 2^11209227900 is an apocalyptic number.

11209227900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11209227900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18065770800).

11209227900 is an abundant number, since it is smaller than the sum of its proper divisors (24922313700).

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

11209227900 is a wasteful number, since it uses less digits than its factorization.

11209227900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99168 (or 99161 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The spelling of 11209227900 in words is "eleven billion, two hundred nine million, two hundred twenty-seven thousand, nine hundred".