122818289 has 4 divisors (see below), whose sum is σ = 133983600. Its totient is φ = 111652980.

The previous prime is 122818279. The next prime is 122818357. The reversal of 122818289 is 982818221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122818289 - 2⁴ = 122818273 is a prime.

It is a super-2 number, since 2×122818289² = 30168664225775042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122818259) 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, 5582639 + ... + 5582660.

It is an arithmetic number, because the mean of its divisors is an integer number (33495900).

Almost surely, 2^122818289 is an apocalyptic number.

It is an amenable number.

122818289 is a deficient number, since it is larger than the sum of its proper divisors (11165311).

122818289 is a wasteful number, since it uses less digits than its factorization.

122818289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11165310.

The product of its digits is 36864, while the sum is 41.

The square root of 122818289 is about 11082.3413140004. The cubic root of 122818289 is about 497.0739620058.

The spelling of 122818289 in words is "one hundred twenty-two million, eight hundred eighteen thousand, two hundred eighty-nine".