122702161 has 4 divisors (see below), whose sum is σ = 126933300. Its totient is φ = 118471024.

The previous prime is 122702159. The next prime is 122702179. The reversal of 122702161 is 161207221.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31136400 + 91565761 = 5580^2 + 9569^2 .

It is a cyclic number.

It is not a de Polignac number, because 122702161 - 2¹ = 122702159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122702191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2115526 + ... + 2115583.

It is an arithmetic number, because the mean of its divisors is an integer number (31733325).

Almost surely, 2^122702161 is an apocalyptic number.

It is an amenable number.

122702161 is a deficient number, since it is larger than the sum of its proper divisors (4231139).

122702161 is an equidigital number, since it uses as much as digits as its factorization.

122702161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4231138.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 122702161 is about 11077.1007488422. The cubic root of 122702161 is about 496.9172469965.

Adding to 122702161 its reverse (161207221), we get a palindrome (283909382).

The spelling of 122702161 in words is "one hundred twenty-two million, seven hundred two thousand, one hundred sixty-one".