122221200212111 has 96 divisors (see below), whose sum is σ = 170423339581440. Its totient is φ = 85026643228800.

The previous prime is 122221200212063. The next prime is 122221200212141. The reversal of 122221200212111 is 111212002122221.

It is a de Polignac number, because none of the positive numbers 2^k-122221200212111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221200212141) 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, 709499756 + ... + 709671998.

It is an arithmetic number, because the mean of its divisors is an integer number (1775243120640).

Almost surely, 2^{122221200212111} is an apocalyptic number.

122221200212111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122221200212111 is a deficient number, since it is larger than the sum of its proper divisors (48202139369329).

122221200212111 is a wasteful number, since it uses less digits than its factorization.

122221200212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174077 (or 174064 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 122221200212111 its reverse (111212002122221), we get a palindrome (233433202334332).

The spelling of 122221200212111 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, two hundred million, two hundred twelve thousand, one hundred eleven".