12100122222111 has 96 divisors (see below), whose sum is σ = 22983052700160. Its totient is φ = 6220975219200.

The previous prime is 12100122222059. The next prime is 12100122222113. The reversal of 12100122222111 is 11122222100121.

12100122222111 is a `hidden beast` number, since 1 + 210 + 0 + 1 + 222 + 221 + 11 = 666.

It is not a de Polignac number, because 12100122222111 - 2¹⁷ = 12100122091039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100122222113) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 2874195 + ... + 5697476.

It is an arithmetic number, because the mean of its divisors is an integer number (239406798960).

Almost surely, 2^{12100122222111} is an apocalyptic number.

12100122222111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12100122222111 is a deficient number, since it is larger than the sum of its proper divisors (10882930478049).

12100122222111 is a wasteful number, since it uses less digits than its factorization.

12100122222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8571802 (or 8571789 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12100122222111 its reverse (11122222100121), we get a palindrome (23222344322232).

The spelling of 12100122222111 in words is "twelve trillion, one hundred billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred eleven".