12011100223212 has 18 divisors (see below), whose sum is σ = 30361392230988. Its totient is φ = 4003700074392.

The previous prime is 12011100223169. The next prime is 12011100223229. The reversal of 12011100223212 is 21232200111021.

12011100223212 is a `hidden beast` number, since 120 + 1 + 110 + 0 + 223 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166820836398 + ... + 166820836469.

Almost surely, 2^{12011100223212} is an apocalyptic number.

12011100223212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12011100223212 is an abundant number, since it is smaller than the sum of its proper divisors (18350292007776).

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

12011100223212 is a wasteful number, since it uses less digits than its factorization.

12011100223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333641672877 (or 333641672872 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12011100223212 its reverse (21232200111021), we get a palindrome (33243300334233).

The spelling of 12011100223212 in words is "twelve trillion, eleven billion, one hundred million, two hundred twenty-three thousand, two hundred twelve".