23122229 has 4 divisors (see below), whose sum is σ = 24900876. Its totient is φ = 21343584.

The previous prime is 23122219. The next prime is 23122241. The reversal of 23122229 is 92222132.

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 5499025 + 17623204 = 2345^2 + 4198^2 .

It is a cyclic number.

It is not a de Polignac number, because 23122229 - 2⁴ = 23122213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23122219) 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, 889304 + ... + 889329.

It is an arithmetic number, because the mean of its divisors is an integer number (6225219).

Almost surely, 2^23122229 is an apocalyptic number.

It is an amenable number.

23122229 is a deficient number, since it is larger than the sum of its proper divisors (1778647).

23122229 is a wasteful number, since it uses less digits than its factorization.

23122229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778646.

The product of its digits is 864, while the sum is 23.

The square root of 23122229 is about 4808.5578919256. The cubic root of 23122229 is about 284.8895806990.

The spelling of 23122229 in words is "twenty-three million, one hundred twenty-two thousand, two hundred twenty-nine".