201122220122 has 4 divisors (see below), whose sum is σ = 301683330186. Its totient is φ = 100561110060.

The previous prime is 201122220097. The next prime is 201122220181. The reversal of 201122220122 is 221022221102.

It is a happy number.

201122220122 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221022221102 = 2 ⋅110511110551.

It can be written as a sum of positive squares in only one way, i.e., 175761339121 + 25360881001 = 419239^2 + 159251^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 201122220122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50280555029 + ... + 50280555032.

Almost surely, 2^201122220122 is an apocalyptic number.

201122220122 is a deficient number, since it is larger than the sum of its proper divisors (100561110064).

201122220122 is a wasteful number, since it uses less digits than its factorization.

201122220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100561110063.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201122220122 its reverse (221022221102), we get a palindrome (422144441224).

The spelling of 201122220122 in words is "two hundred one billion, one hundred twenty-two million, two hundred twenty thousand, one hundred twenty-two".