122112012111 has 8 divisors (see below), whose sum is σ = 162981651840. Its totient is φ = 81325190232.

The previous prime is 122112012109. The next prime is 122112012149. The reversal of 122112012111 is 111210211221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122112012111 - 2¹ = 122112012109 is a prime.

It is a super-2 number, since 2×122112012111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122112012151) 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 7 ways as a sum of consecutive naturals, for example, 20701021 + ... + 20706918.

It is an arithmetic number, because the mean of its divisors is an integer number (20372706480).

Almost surely, 2^122112012111 is an apocalyptic number.

122112012111 is a deficient number, since it is larger than the sum of its proper divisors (40869639729).

122112012111 is an equidigital number, since it uses as much as digits as its factorization.

122112012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41408925.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 122112012111 its reverse (111210211221), we get a palindrome (233322223332).

The spelling of 122112012111 in words is "one hundred twenty-two billion, one hundred twelve million, twelve thousand, one hundred eleven".