201220333123 has 4 divisors (see below), whose sum is σ = 206128146168. Its totient is φ = 196312520080.

The previous prime is 201220333121. The next prime is 201220333177. The reversal of 201220333123 is 321333022102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201220333123 - 2¹ = 201220333121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201220333094 and 201220333103.

It is not an unprimeable number, because it can be changed into a prime (201220333121) 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, 2453906461 + ... + 2453906542.

It is an arithmetic number, because the mean of its divisors is an integer number (51532036542).

Almost surely, 2^201220333123 is an apocalyptic number.

201220333123 is a deficient number, since it is larger than the sum of its proper divisors (4907813045).

201220333123 is an equidigital number, since it uses as much as digits as its factorization.

201220333123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4907813044.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 201220333123 its reverse (321333022102), we get a palindrome (522553355225).

The spelling of 201220333123 in words is "two hundred one billion, two hundred twenty million, three hundred thirty-three thousand, one hundred twenty-three".