201323320122 has 16 divisors (see below), whose sum is σ = 403188569280. Its totient is φ = 67017451872.

The previous prime is 201323320087. The next prime is 201323320141. The reversal of 201323320122 is 221023323102.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22575547 + ... + 22584462.

It is an arithmetic number, because the mean of its divisors is an integer number (25199285580).

Almost surely, 2^201323320122 is an apocalyptic number.

201323320122 is an abundant number, since it is smaller than the sum of its proper divisors (201865249158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201323320122 is a wasteful number, since it uses less digits than its factorization.

201323320122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45160757.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 201323320122 its reverse (221023323102), we get a palindrome (422346643224).

The spelling of 201323320122 in words is "two hundred one billion, three hundred twenty-three million, three hundred twenty thousand, one hundred twenty-two".