122733821 has 4 divisors (see below), whose sum is σ = 140267232. Its totient is φ = 105200412.

The previous prime is 122733799. The next prime is 122733823. The reversal of 122733821 is 128337221.

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.

It is a cyclic number.

It is not a de Polignac number, because 122733821 - 2¹⁸ = 122471677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122733823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8766695 + ... + 8766708.

It is an arithmetic number, because the mean of its divisors is an integer number (35066808).

Almost surely, 2^122733821 is an apocalyptic number.

It is an amenable number.

122733821 is a deficient number, since it is larger than the sum of its proper divisors (17533411).

122733821 is an equidigital number, since it uses as much as digits as its factorization.

122733821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17533410.

The product of its digits is 4032, while the sum is 29.

The square root of 122733821 is about 11078.5297309706. The cubic root of 122733821 is about 496.9599820416.

The spelling of 122733821 in words is "one hundred twenty-two million, seven hundred thirty-three thousand, eight hundred twenty-one".