100011121212 has 96 divisors (see below), whose sum is σ = 245324556288. Its totient is φ = 31673424384.

The previous prime is 100011121187. The next prime is 100011121213. The reversal of 100011121212 is 212121110001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100011121213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9531433 + ... + 9541919.

It is an arithmetic number, because the mean of its divisors is an integer number (2555464128).

Almost surely, 2^100011121212 is an apocalyptic number.

100011121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100011121212 is an abundant number, since it is smaller than the sum of its proper divisors (145313435076).

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

100011121212 is a wasteful number, since it uses less digits than its factorization.

100011121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11035 (or 11033 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 100011121212 its reverse (212121110001), we get a palindrome (312132231213).

The spelling of 100011121212 in words is "one hundred billion, eleven million, one hundred twenty-one thousand, two hundred twelve".