122851 has 4 divisors (see below), whose sum is σ = 125752. Its totient is φ = 119952.

The previous prime is 122849. The next prime is 122861. The reversal of 122851 is 158221.

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 122851 - 2¹ = 122849 is a prime.

It is the 351-st Hogben number.

It is a Duffinian number.

122851 is a lucky number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (122861) by changing a digit.

It is a nontrivial repunit in base 350.

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, 1386 + ... + 1471.

It is an arithmetic number, because the mean of its divisors is an integer number (31438).

2¹²²⁸⁵¹ is an apocalyptic number.

122851 is a deficient number, since it is larger than the sum of its proper divisors (2901).

122851 is an equidigital number, since it uses as much as digits as its factorization.

122851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900.

The product of its digits is 160, while the sum is 19.

The square root of 122851 is about 350.5010698985. The cubic root of 122851 is about 49.7118087744.

The spelling of 122851 in words is "one hundred twenty-two thousand, eight hundred fifty-one".