121865833 has 4 divisors (see below), whose sum is σ = 121999360. Its totient is φ = 121732308.

The previous prime is 121865813. The next prime is 121865851. The reversal of 121865833 is 338568121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 338568121 = 97 ⋅3490393.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121865833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121865792 and 121865801.

It is not an unprimeable number, because it can be changed into a prime (121865803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65385 + ... + 67222.

It is an arithmetic number, because the mean of its divisors is an integer number (30499840).

Almost surely, 2^121865833 is an apocalyptic number.

It is an amenable number.

121865833 is a deficient number, since it is larger than the sum of its proper divisors (133527).

121865833 is an equidigital number, since it uses as much as digits as its factorization.

121865833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133526.

The product of its digits is 34560, while the sum is 37.

The square root of 121865833 is about 11039.2858917595. The cubic root of 121865833 is about 495.7856896402.

The spelling of 121865833 in words is "one hundred twenty-one million, eight hundred sixty-five thousand, eight hundred thirty-three".