12221110122111 has 24 divisors (see below), whose sum is σ = 19257971031936. Its totient is φ = 7406554879440.

The previous prime is 12221110122061. The next prime is 12221110122131. The reversal of 12221110122111 is 11122101112221.

It is a happy number.

12221110122111 is a `hidden beast` number, since 122 + 211 + 101 + 221 + 11 = 666.

It is not a de Polignac number, because 12221110122111 - 2²⁹ = 12220573251199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221110122131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2699526 + ... + 5632908.

It is an arithmetic number, because the mean of its divisors is an integer number (802415459664).

Almost surely, 2^{12221110122111} is an apocalyptic number.

12221110122111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12221110122111 is a deficient number, since it is larger than the sum of its proper divisors (7036860909825).

12221110122111 is a wasteful number, since it uses less digits than its factorization.

12221110122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975483 (or 2975480 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12221110122111 its reverse (11122101112221), we get a palindrome (23343211234332).

The spelling of 12221110122111 in words is "twelve trillion, two hundred twenty-one billion, one hundred ten million, one hundred twenty-two thousand, one hundred eleven".