121235930 has 16 divisors (see below), whose sum is σ = 218465640. Its totient is φ = 48440832.

The previous prime is 121235929. The next prime is 121235951. The reversal of 121235930 is 39532121.

It can be written as a sum of positive squares in 4 ways, for example, as 92409769 + 28826161 = 9613^2 + 5369^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121235930.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3566 + ... + 15974.

Almost surely, 2^121235930 is an apocalyptic number.

121235930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121235930 is a deficient number, since it is larger than the sum of its proper divisors (97229710).

121235930 is a wasteful number, since it uses less digits than its factorization.

121235930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13393.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 121235930 is about 11010.7188684481. The cubic root of 121235930 is about 494.9300040468.

The spelling of 121235930 in words is "one hundred twenty-one million, two hundred thirty-five thousand, nine hundred thirty".