200121255 has 24 divisors (see below), whose sum is σ = 347244768. Its totient is φ = 106618176.

The previous prime is 200121247. The next prime is 200121329. The reversal of 200121255 is 552121002.

It is not a de Polignac number, because 200121255 - 2³ = 200121247 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 56929 + ... + 60341.

It is an arithmetic number, because the mean of its divisors is an integer number (14468532).

Almost surely, 2^200121255 is an apocalyptic number.

200121255 is a deficient number, since it is larger than the sum of its proper divisors (147123513).

200121255 is a wasteful number, since it uses less digits than its factorization.

200121255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4727 (or 4724 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 200121255 is about 14146.4219857885. The cubic root of 200121255 is about 584.9217076902.

Adding to 200121255 its reverse (552121002), we get a palindrome (752242257).

The spelling of 200121255 in words is "two hundred million, one hundred twenty-one thousand, two hundred fifty-five".