201222120123 has 48 divisors (see below), whose sum is σ = 309432115200. Its totient is φ = 125782009920.

The previous prime is 201222120091. The next prime is 201222120133. The reversal of 201222120123 is 321021222102.

201222120123 is a `hidden beast` number, since 201 + 222 + 120 + 123 = 666.

It is not a de Polignac number, because 201222120123 - 2⁵ = 201222120091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201222120096 and 201222120105.

It is not an unprimeable number, because it can be changed into a prime (201222120133) 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 in 47 ways as a sum of consecutive naturals, for example, 2426418 + ... + 2507976.

It is an arithmetic number, because the mean of its divisors is an integer number (6446502400).

Almost surely, 2^201222120123 is an apocalyptic number.

201222120123 is a deficient number, since it is larger than the sum of its proper divisors (108209995077).

201222120123 is a wasteful number, since it uses less digits than its factorization.

201222120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81872 (or 81869 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 201222120123 its reverse (321021222102), we get a palindrome (522243342225).

The spelling of 201222120123 in words is "two hundred one billion, two hundred twenty-two million, one hundred twenty thousand, one hundred twenty-three".