121235416 has 8 divisors (see below), whose sum is σ = 227316420. Its totient is φ = 60617704.

The previous prime is 121235393. The next prime is 121235417. The reversal of 121235416 is 614532121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121235417) 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, 7577206 + ... + 7577221.

Almost surely, 2^121235416 is an apocalyptic number.

It is an amenable number.

121235416 is a deficient number, since it is larger than the sum of its proper divisors (106081004).

121235416 is a wasteful number, since it uses less digits than its factorization.

121235416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15154433 (or 15154429 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 121235416 is about 11010.6955275314. The cubic root of 121235416 is about 494.9293045996.

Adding to 121235416 its reverse (614532121), we get a palindrome (735767537).

The spelling of 121235416 in words is "one hundred twenty-one million, two hundred thirty-five thousand, four hundred sixteen".