122291 has 8 divisors (see below), whose sum is σ = 137760. Its totient is φ = 107712.

The previous prime is 122279. The next prime is 122299. The reversal of 122291 is 192221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122291 - 2¹⁰ = 121267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95 + ... + 503.

It is an arithmetic number, because the mean of its divisors is an integer number (17220).

2¹²²²⁹¹ is an apocalyptic number.

122291 is a deficient number, since it is larger than the sum of its proper divisors (15469).

122291 is a wasteful number, since it uses less digits than its factorization.

122291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445.

The product of its digits is 72, while the sum is 17.

The square root of 122291 is about 349.7013011128. The cubic root of 122291 is about 49.6361588139.

The spelling of 122291 in words is "one hundred twenty-two thousand, two hundred ninety-one".