201323122222 has 4 divisors (see below), whose sum is σ = 301984683336. Its totient is φ = 100661561110.

The previous prime is 201323122207. The next prime is 201323122229. The reversal of 201323122222 is 222221323102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222221323102 = 2 ⋅111110661551.

It is a junction number, because it is equal to n+sod(n) for n = 201323122193 and 201323122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201323122229) 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 as a sum of consecutive naturals, namely, 50330780554 + ... + 50330780557.

It is an arithmetic number, because the mean of its divisors is an integer number (75496170834).

Almost surely, 2^201323122222 is an apocalyptic number.

201323122222 is a deficient number, since it is larger than the sum of its proper divisors (100661561114).

201323122222 is a wasteful number, since it uses less digits than its factorization.

201323122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100661561113.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 201323122222 its reverse (222221323102), we get a palindrome (423544445324).

The spelling of 201323122222 in words is "two hundred one billion, three hundred twenty-three million, one hundred twenty-two thousand, two hundred twenty-two".