122182261 has 4 divisors (see below), whose sum is σ = 122568012. Its totient is φ = 121796512.

The previous prime is 122182243. The next prime is 122182301. The reversal of 122182261 is 162281221.

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 38825361 + 83356900 = 6231^2 + 9130^2 .

It is a cyclic number.

It is not a de Polignac number, because 122182261 - 2²¹ = 120085109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122182231) 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, 192400 + ... + 193033.

It is an arithmetic number, because the mean of its divisors is an integer number (30642003).

Almost surely, 2^122182261 is an apocalyptic number.

It is an amenable number.

122182261 is a deficient number, since it is larger than the sum of its proper divisors (385751).

122182261 is an equidigital number, since it uses as much as digits as its factorization.

122182261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385750.

The product of its digits is 768, while the sum is 25.

The square root of 122182261 is about 11053.6085058229. The cubic root of 122182261 is about 496.2144258561.

The spelling of 122182261 in words is "one hundred twenty-two million, one hundred eighty-two thousand, two hundred sixty-one".