121320938 has 4 divisors (see below), whose sum is σ = 181981410. Its totient is φ = 60660468.

The previous prime is 121320937. The next prime is 121320967. The reversal of 121320938 is 839023121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 839023121 = 2503 ⋅335207.

It can be written as a sum of positive squares in only one way, i.e., 114854089 + 6466849 = 10717^2 + 2543^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121320938.

It is not an unprimeable number, because it can be changed into a prime (121320937) 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 as a sum of consecutive naturals, namely, 30330233 + ... + 30330236.

Almost surely, 2^121320938 is an apocalyptic number.

121320938 is a deficient number, since it is larger than the sum of its proper divisors (60660472).

121320938 is an equidigital number, since it uses as much as digits as its factorization.

121320938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60660471.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 121320938 is about 11014.5784304257. The cubic root of 121320938 is about 495.0456550755.

The spelling of 121320938 in words is "one hundred twenty-one million, three hundred twenty thousand, nine hundred thirty-eight".