122201111 has 2 divisors, whose sum is σ = 122201112. Its totient is φ = 122201110.

The previous prime is 122201089. The next prime is 122201143. The reversal of 122201111 is 111102221.

It is a weak prime.

It is an emirp because it is prime and its reverse (111102221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122201111 - 2¹⁰ = 122200087 is a prime.

It is a super-2 number, since 2×122201111² = 29866223059268642, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 122201092 and 122201101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122201311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61100555 + 61100556.

It is an arithmetic number, because the mean of its divisors is an integer number (61100556).

Almost surely, 2^122201111 is an apocalyptic number.

122201111 is a deficient number, since it is larger than the sum of its proper divisors (1).

122201111 is an equidigital number, since it uses as much as digits as its factorization.

122201111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 122201111 is about 11054.4611356683. The cubic root of 122201111 is about 496.2399428197.

Adding to 122201111 its reverse (111102221), we get a palindrome (233303332).

It can be divided in two parts, 12220 and 1111, that added together give a palindrome (13331).

The spelling of 122201111 in words is "one hundred twenty-two million, two hundred one thousand, one hundred eleven".