11121332100 has 72 divisors (see below), whose sum is σ = 32188856448. Its totient is φ = 2964662400.

The previous prime is 11121332093. The next prime is 11121332147. The reversal of 11121332100 is 123312111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11121332100.

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, 1314885 + ... + 1323315.

Almost surely, 2^11121332100 is an apocalyptic number.

11121332100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121332100 is an abundant number, since it is smaller than the sum of its proper divisors (21067524348).

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

11121332100 is a wasteful number, since it uses less digits than its factorization.

11121332100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12845 (or 12838 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11121332100 its reverse (123312111), we get a palindrome (11244644211).

The spelling of 11121332100 in words is "eleven billion, one hundred twenty-one million, three hundred thirty-two thousand, one hundred".