12011022221100 has 144 divisors (see below), whose sum is σ = 39828960450048. Its totient is φ = 2737599068160.

The previous prime is 12011022221071. The next prime is 12011022221123. The reversal of 12011022221100 is 112222011021.

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 12011022221100.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7360024 + ... + 8842623.

Almost surely, 2^{12011022221100} is an apocalyptic number.

12011022221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011022221100 is an abundant number, since it is smaller than the sum of its proper divisors (27817938228948).

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

12011022221100 is a wasteful number, since it uses less digits than its factorization.

12011022221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16203024 (or 16203017 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12011022221100 its reverse (112222011021), we get a palindrome (12123244232121).

The spelling of 12011022221100 in words is "twelve trillion, eleven billion, twenty-two million, two hundred twenty-one thousand, one hundred".