11211320204 has 12 divisors (see below), whose sum is σ = 22422640464. Its totient is φ = 4804851504.

The previous prime is 11211320203. The next prime is 11211320257. The reversal of 11211320204 is 40202311211.

11211320204 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (11211320203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200202119 + ... + 200202174.

It is an arithmetic number, because the mean of its divisors is an integer number (1868553372).

Almost surely, 2^11211320204 is an apocalyptic number.

11211320204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11211320204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11211320204 is a wasteful number, since it uses less digits than its factorization.

11211320204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400404304 (or 400404302 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11211320204 its reverse (40202311211), we get a palindrome (51413631415).

The spelling of 11211320204 in words is "eleven billion, two hundred eleven million, three hundred twenty thousand, two hundred four".