11331111204 has 36 divisors (see below), whose sum is σ = 32734321984. Its totient is φ = 3237460272.

The previous prime is 11331111157. The next prime is 11331111223. The reversal of 11331111204 is 40211113311.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×11331111204² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 22482112 + ... + 22482615.

Almost surely, 2^11331111204 is an apocalyptic number.

11331111204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11331111204 is an abundant number, since it is smaller than the sum of its proper divisors (21403210780).

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

11331111204 is a wasteful number, since it uses less digits than its factorization.

11331111204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44964744 (or 44964739 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 11331111204 its reverse (40211113311), we get a palindrome (51542224515).

The spelling of 11331111204 in words is "eleven billion, three hundred thirty-one million, one hundred eleven thousand, two hundred four".