200230121 has 24 divisors (see below), whose sum is σ = 254999304. Its totient is φ = 155796480.

The previous prime is 200230109. The next prime is 200230133. The reversal of 200230121 is 121032002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (200230109) and next prime (200230133).

It can be written as a sum of positive squares in 4 ways, for example, as 290521 + 199939600 = 539^2 + 14140^2 .

It is not a de Polignac number, because 200230121 - 2²⁶ = 133121257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200230171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36281 + ... + 41433.

It is an arithmetic number, because the mean of its divisors is an integer number (10624971).

Almost surely, 2^200230121 is an apocalyptic number.

It is an amenable number.

200230121 is a deficient number, since it is larger than the sum of its proper divisors (54769183).

200230121 is a wasteful number, since it uses less digits than its factorization.

200230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5241 (or 5234 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 200230121 is about 14150.2692907238. The cubic root of 200230121 is about 585.0277543021.

Adding to 200230121 its reverse (121032002), we get a palindrome (321262123).

It can be divided in two parts, 2002 and 30121, that added together give a palindrome (32123).

The spelling of 200230121 in words is "two hundred million, two hundred thirty thousand, one hundred twenty-one".