210201123 has 16 divisors (see below), whose sum is σ = 321840000. Its totient is φ = 120689280.

The previous prime is 210201083. The next prime is 210201139. The reversal of 210201123 is 321102012.

It is not a de Polignac number, because 210201123 - 2⁸ = 210200867 is a prime.

It is a super-2 number, since 2×210201123² = 88369024220922258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210201099 and 210201108.

It is not an unprimeable number, because it can be changed into a prime (210201143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166998 + ... + 168251.

It is an arithmetic number, because the mean of its divisors is an integer number (20115000).

Almost surely, 2^210201123 is an apocalyptic number.

210201123 is a deficient number, since it is larger than the sum of its proper divisors (111638877).

210201123 is a wasteful number, since it uses less digits than its factorization.

210201123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335282.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 210201123 is about 14498.3144882431. The cubic root of 210201123 is about 594.5818901931.

Adding to 210201123 its reverse (321102012), we get a palindrome (531303135).

The spelling of 210201123 in words is "two hundred ten million, two hundred one thousand, one hundred twenty-three".