122120221211 has 4 divisors (see below), whose sum is σ = 122131719024. Its totient is φ = 122108723400.

The previous prime is 122120221207. The next prime is 122120221229. The reversal of 122120221211 is 112122021221.

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

It is a cyclic number.

It is not a de Polignac number, because 122120221211 - 2² = 122120221207 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 122120221211.

It is not an unprimeable number, because it can be changed into a prime (122120221271) 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, 5732960 + ... + 5754221.

It is an arithmetic number, because the mean of its divisors is an integer number (30532929756).

Almost surely, 2^122120221211 is an apocalyptic number.

122120221211 is a deficient number, since it is larger than the sum of its proper divisors (11497813).

122120221211 is a wasteful number, since it uses less digits than its factorization.

122120221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11497812.

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

Adding to 122120221211 its reverse (112122021221), we get a palindrome (234242242432).

The spelling of 122120221211 in words is "one hundred twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, two hundred eleven".