201225123 has 48 divisors (see below), whose sum is σ = 330071040. Its totient is φ = 117028800.

The previous prime is 201225097. The next prime is 201225133. The reversal of 201225123 is 321522102.

It is not a de Polignac number, because 201225123 - 2⁸ = 201224867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201225096 and 201225105.

It is not an unprimeable number, because it can be changed into a prime (201225133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 530748 + ... + 531126.

It is an arithmetic number, because the mean of its divisors is an integer number (6876480).

Almost surely, 2^201225123 is an apocalyptic number.

201225123 is a deficient number, since it is larger than the sum of its proper divisors (128845917).

201225123 is a wasteful number, since it uses less digits than its factorization.

201225123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 201225123 is about 14185.3841329729. The cubic root of 201225123 is about 585.9952115145.

Adding to 201225123 its reverse (321522102), we get a palindrome (522747225).

The spelling of 201225123 in words is "two hundred one million, two hundred twenty-five thousand, one hundred twenty-three".