122182861 has 4 divisors (see below), whose sum is σ = 124488252. Its totient is φ = 119877472.

The previous prime is 122182847. The next prime is 122182871. The reversal of 122182861 is 168281221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 168281221 = 233 ⋅722237.

It can be written as a sum of positive squares in 2 ways, for example, as 35581225 + 86601636 = 5965^2 + 9306^2 .

It is a cyclic number.

It is not a de Polignac number, because 122182861 - 2⁷ = 122182733 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122182871) 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, 1152616 + ... + 1152721.

It is an arithmetic number, because the mean of its divisors is an integer number (31122063).

Almost surely, 2^122182861 is an apocalyptic number.

It is an amenable number.

122182861 is a deficient number, since it is larger than the sum of its proper divisors (2305391).

122182861 is an equidigital number, since it uses as much as digits as its factorization.

122182861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305390.

The product of its digits is 3072, while the sum is 31.

The square root of 122182861 is about 11053.6356462478. The cubic root of 122182861 is about 496.2152381075.

The spelling of 122182861 in words is "one hundred twenty-two million, one hundred eighty-two thousand, eight hundred sixty-one".