122120122211 has 4 divisors (see below), whose sum is σ = 126059481024. Its totient is φ = 118180763400.

The previous prime is 122120122193. The next prime is 122120122219. The reversal of 122120122211 is 112221021221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122120122211 is a prime.

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 122120122211.

It is not an unprimeable number, because it can be changed into a prime (122120122219) 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 3 ways as a sum of consecutive naturals, for example, 1969679360 + ... + 1969679421.

It is an arithmetic number, because the mean of its divisors is an integer number (31514870256).

Almost surely, 2^122120122211 is an apocalyptic number.

122120122211 is a deficient number, since it is larger than the sum of its proper divisors (3939358813).

122120122211 is an equidigital number, since it uses as much as digits as its factorization.

122120122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939358812.

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

Adding to 122120122211 its reverse (112221021221), we get a palindrome (234341143432).

The spelling of 122120122211 in words is "one hundred twenty-two billion, one hundred twenty million, one hundred twenty-two thousand, two hundred eleven".