122221200211 has 4 divisors (see below), whose sum is σ = 133332218424. Its totient is φ = 111110182000.

The previous prime is 122221200187. The next prime is 122221200229. The reversal of 122221200211 is 112002122221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112002122221 = 11 ⋅10182011111.

It is a cyclic number.

It is not a de Polignac number, because 122221200211 - 2¹¹ = 122221198163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122221210211) 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, 5555509090 + ... + 5555509111.

It is an arithmetic number, because the mean of its divisors is an integer number (33333054606).

Almost surely, 2^122221200211 is an apocalyptic number.

122221200211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122221200211 is a deficient number, since it is larger than the sum of its proper divisors (11111018213).

122221200211 is a wasteful number, since it uses less digits than its factorization.

122221200211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111018212.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122221200211 its reverse (112002122221), we get a palindrome (234223322432).

The spelling of 122221200211 in words is "one hundred twenty-two billion, two hundred twenty-one million, two hundred thousand, two hundred eleven".