122201122211 has 4 divisors (see below), whose sum is σ = 139658425392. Its totient is φ = 104743819032.

The previous prime is 122201122193. The next prime is 122201122237. The reversal of 122201122211 is 112221102221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112221102221 = 137 ⋅819132133.

It is a cyclic number.

It is not a de Polignac number, because 122201122211 - 2¹⁰ = 122201121187 is a prime.

It is a super-2 number, since 2×122201122211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122201122211.

It is not an unprimeable number, because it can be changed into a prime (122201122291) 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, 8728651580 + ... + 8728651593.

It is an arithmetic number, because the mean of its divisors is an integer number (34914606348).

Almost surely, 2^122201122211 is an apocalyptic number.

122201122211 is a deficient number, since it is larger than the sum of its proper divisors (17457303181).

122201122211 is an equidigital number, since it uses as much as digits as its factorization.

122201122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17457303180.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 122201122211 its reverse (112221102221), we get a palindrome (234422224432).

The spelling of 122201122211 in words is "one hundred twenty-two billion, two hundred one million, one hundred twenty-two thousand, two hundred eleven".