201220122122 has 8 divisors (see below), whose sum is σ = 302008049316. Its totient is φ = 100550772352.

The previous prime is 201220122109. The next prime is 201220122127. The reversal of 201220122122 is 221221022102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 198693954001 + 2526168121 = 445751^2 + 50261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 201220122122.

It is not an unprimeable number, because it can be changed into a prime (201220122127) 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, 29640113 + ... + 29646900.

Almost surely, 2^201220122122 is an apocalyptic number.

201220122122 is a deficient number, since it is larger than the sum of its proper divisors (100787927194).

201220122122 is a wasteful number, since it uses less digits than its factorization.

201220122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59288712.

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

Adding to 201220122122 its reverse (221221022102), we get a palindrome (422441144224).

The spelling of 201220122122 in words is "two hundred one billion, two hundred twenty million, one hundred twenty-two thousand, one hundred twenty-two".