12221011111100 has 36 divisors (see below), whose sum is σ = 28930466305608. Its totient is φ = 4444004040000.

The previous prime is 12221011111031. The next prime is 12221011111123. The reversal of 12221011111100 is 111111012221.

It is a super-2 number, since 2×12221011111100² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5555003951 + ... + 5555006150.

Almost surely, 2^{12221011111100} is an apocalyptic number.

12221011111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221011111100 is an abundant number, since it is smaller than the sum of its proper divisors (16709455194508).

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

12221011111100 is a wasteful number, since it uses less digits than its factorization.

12221011111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11110010126 (or 11110010119 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12221011111100 its reverse (111111012221), we get a palindrome (12332122123321).

The spelling of 12221011111100 in words is "twelve trillion, two hundred twenty-one billion, eleven million, one hundred eleven thousand, one hundred".