100011121100 has 72 divisors (see below), whose sum is σ = 240287412288. Its totient is φ = 35824852800.

The previous prime is 100011121087. The next prime is 100011121109. The reversal of 100011121100 is 1121110001.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (100011121109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 604802 + ... + 752201.

Almost surely, 2^100011121100 is an apocalyptic number.

100011121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100011121100 is an abundant number, since it is smaller than the sum of its proper divisors (140276291188).

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

100011121100 is a wasteful number, since it uses less digits than its factorization.

100011121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357095 (or 1357088 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 100011121100 its reverse (1121110001), we get a palindrome (101132231101).

The spelling of 100011121100 in words is "one hundred billion, eleven million, one hundred twenty-one thousand, one hundred".