122201111111 has 4 divisors (see below), whose sum is σ = 122508922872. Its totient is φ = 121893299352.

The previous prime is 122201111077. The next prime is 122201111141. The reversal of 122201111111 is 111111102221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111111102221 = 7 ⋅15873014603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122201111111 is a prime.

It is a super-2 number, since 2×122201111111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

122201111111 is a modest number, since divided by 1111111 gives 12220 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122201111141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153905285 + ... + 153906078.

It is an arithmetic number, because the mean of its divisors is an integer number (30627230718).

Almost surely, 2^122201111111 is an apocalyptic number.

122201111111 is a deficient number, since it is larger than the sum of its proper divisors (307811761).

122201111111 is an equidigital number, since it uses as much as digits as its factorization.

122201111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307811760.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 122201111111 its reverse (111111102221), we get a palindrome (233312213332).

The spelling of 122201111111 in words is "one hundred twenty-two billion, two hundred one million, one hundred eleven thousand, one hundred eleven".