11100112231212 has 36 divisors (see below), whose sum is σ = 28816958033136. Its totient is φ = 3600036398880.

The previous prime is 11100112231181. The next prime is 11100112231213. The reversal of 11100112231212 is 21213221100111.

It is a happy number.

11100112231212 is a `hidden beast` number, since 1 + 110 + 0 + 112 + 231 + 212 = 666.

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

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

It is not an unprimeable number, because it can be changed into a prime (11100112231213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4166707464 + ... + 4166710127.

It is an arithmetic number, because the mean of its divisors is an integer number (800471056476).

Almost surely, 2^{11100112231212} is an apocalyptic number.

11100112231212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11100112231212 is an abundant number, since it is smaller than the sum of its proper divisors (17716845801924).

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

11100112231212 is a wasteful number, since it uses less digits than its factorization.

11100112231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8333417638 (or 8333417633 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 11100112231212 its reverse (21213221100111), we get a palindrome (32313333331323).

The spelling of 11100112231212 in words is "eleven trillion, one hundred billion, one hundred twelve million, two hundred thirty-one thousand, two hundred twelve".