12212122110111 has 60 divisors (see below), whose sum is σ = 23150417506920. Its totient is φ = 6343959515040.

The previous prime is 12212122110109. The next prime is 12212122110119. The reversal of 12212122110111 is 11101122121221.

It is a happy number.

It is not a de Polignac number, because 12212122110111 - 2¹ = 12212122110109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212122110119) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 139814356 + ... + 139901673.

It is an arithmetic number, because the mean of its divisors is an integer number (385840291782).

Almost surely, 2^{12212122110111} is an apocalyptic number.

12212122110111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12212122110111 is a deficient number, since it is larger than the sum of its proper divisors (10938295396809).

12212122110111 is a wasteful number, since it uses less digits than its factorization.

12212122110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279716066 (or 279716050 counting only the distinct ones).

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

Adding to 12212122110111 its reverse (11101122121221), we get a palindrome (23313244231332).

The spelling of 12212122110111 in words is "twelve trillion, two hundred twelve billion, one hundred twenty-two million, one hundred ten thousand, one hundred eleven".