122122212010111 has 2 divisors, whose sum is σ = 122122212010112. Its totient is φ = 122122212010110.

The previous prime is 122122212010109. The next prime is 122122212010133. The reversal of 122122212010111 is 111010212221221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122122212010111 - 2¹ = 122122212010109 is a prime.

Together with 122122212010109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122122212010151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61061106005055 + 61061106005056.

It is an arithmetic number, because the mean of its divisors is an integer number (61061106005056).

Almost surely, 2^{122122212010111} is an apocalyptic number.

122122212010111 is a deficient number, since it is larger than the sum of its proper divisors (1).

122122212010111 is an equidigital number, since it uses as much as digits as its factorization.

122122212010111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 122122212010111 its reverse (111010212221221), we get a palindrome (233132424231332).

The spelling of 122122212010111 in words is "one hundred twenty-two trillion, one hundred twenty-two billion, two hundred twelve million, ten thousand, one hundred eleven".