121506683 has 4 divisors (see below), whose sum is σ = 121533048. Its totient is φ = 121480320.

The previous prime is 121506673. The next prime is 121506689. The reversal of 121506683 is 386605121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121506683 - 2¹⁶ = 121441147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121506689) 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 in 3 ways as a sum of consecutive naturals, for example, 4253 + ... + 16158.

It is an arithmetic number, because the mean of its divisors is an integer number (30383262).

Almost surely, 2^121506683 is an apocalyptic number.

121506683 is a deficient number, since it is larger than the sum of its proper divisors (26365).

121506683 is an equidigital number, since it uses as much as digits as its factorization.

121506683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26364.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 121506683 is about 11023.0069853920. The cubic root of 121506683 is about 495.2981681470.

The spelling of 121506683 in words is "one hundred twenty-one million, five hundred six thousand, six hundred eighty-three".