121806833 has 2 divisors, whose sum is σ = 121806834. Its totient is φ = 121806832.

The previous prime is 121806829. The next prime is 121806847. The reversal of 121806833 is 338608121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121506529 + 300304 = 11023^2 + 548^2 .

It is a cyclic number.

It is not a de Polignac number, because 121806833 - 2² = 121806829 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121806833.

It is not a weakly prime, because it can be changed into another prime (121806823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60903416 + 60903417.

It is an arithmetic number, because the mean of its divisors is an integer number (60903417).

Almost surely, 2^121806833 is an apocalyptic number.

It is an amenable number.

121806833 is a deficient number, since it is larger than the sum of its proper divisors (1).

121806833 is an equidigital number, since it uses as much as digits as its factorization.

121806833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 121806833 is about 11036.6132939412. The cubic root of 121806833 is about 495.7056669989.

The spelling of 121806833 in words is "one hundred twenty-one million, eight hundred six thousand, eight hundred thirty-three".