121900338 has 36 divisors (see below), whose sum is σ = 307240830. Its totient is φ = 34828416.

The previous prime is 121900301. The next prime is 121900343. The reversal of 121900338 is 833009121.

It can be written as a sum of positive squares in only one way, i.e., 111576969 + 10323369 = 10563^2 + 3213^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 68223 + ... + 69986.

Almost surely, 2^121900338 is an apocalyptic number.

121900338 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

121900338 is an abundant number, since it is smaller than the sum of its proper divisors (185340492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121900338 is a wasteful number, since it uses less digits than its factorization.

121900338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138231 (or 138221 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 121900338 is about 11040.8486086895. The cubic root of 121900338 is about 495.8324773534.

Adding to 121900338 its reverse (833009121), we get a palindrome (954909459).

The spelling of 121900338 in words is "one hundred twenty-one million, nine hundred thousand, three hundred thirty-eight".