201122220223 has 4 divisors (see below), whose sum is σ = 201413280568. Its totient is φ = 200831159880.

The previous prime is 201122220199. The next prime is 201122220239. The reversal of 201122220223 is 322022221102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322022221102 = 2 ⋅161011110551.

It is a cyclic number.

It is not a de Polignac number, because 201122220223 - 2²⁹ = 200585349311 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 201122220223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122220823) 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, 145529136 + ... + 145530517.

It is an arithmetic number, because the mean of its divisors is an integer number (50353320142).

Almost surely, 2^201122220223 is an apocalyptic number.

201122220223 is a deficient number, since it is larger than the sum of its proper divisors (291060345).

201122220223 is an equidigital number, since it uses as much as digits as its factorization.

201122220223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291060344.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 201122220223 its reverse (322022221102), we get a palindrome (523144441325).

The spelling of 201122220223 in words is "two hundred one billion, one hundred twenty-two million, two hundred twenty thousand, two hundred twenty-three".