122221112010111 has 24 divisors (see below), whose sum is σ = 179952837062544. Its totient is φ = 79914025964160.

The previous prime is 122221112010017. The next prime is 122221112010131. The reversal of 122221112010111 is 111010211122221.

It is a happy number.

122221112010111 is a `hidden beast` number, since 1 + 222 + 211 + 120 + 1 + 0 + 111 = 666.

It is not a de Polignac number, because 122221112010111 - 2²⁷ = 122220977792383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221112010131) 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, 320594766 + ... + 320975771.

It is an arithmetic number, because the mean of its divisors is an integer number (7498034877606).

Almost surely, 2^{122221112010111} is an apocalyptic number.

122221112010111 is a deficient number, since it is larger than the sum of its proper divisors (57731725052433).

122221112010111 is a wasteful number, since it uses less digits than its factorization.

122221112010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641570951 (or 641570948 counting only the distinct ones).

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

Adding to 122221112010111 its reverse (111010211122221), we get a palindrome (233231323132332).

The spelling of 122221112010111 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, one hundred twelve million, ten thousand, one hundred eleven".