23202221 has 8 divisors (see below), whose sum is σ = 26853120. Its totient is φ = 19635408.

The previous prime is 23202203. The next prime is 23202227. The reversal of 23202221 is 12220232.

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 23202221 - 2¹⁰ = 23201197 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23202196 and 23202205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23202227) 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 7 ways as a sum of consecutive naturals, for example, 20426 + ... + 21531.

It is an arithmetic number, because the mean of its divisors is an integer number (3356640).

Almost surely, 2^23202221 is an apocalyptic number.

It is an amenable number.

23202221 is a deficient number, since it is larger than the sum of its proper divisors (3650899).

23202221 is an equidigital number, since it uses as much as digits as its factorization.

23202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42043.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 23202221 is about 4816.8683810127. The cubic root of 23202221 is about 285.2177304077.

Adding to 23202221 its reverse (12220232), we get a palindrome (35422453).

The spelling of 23202221 in words is "twenty-three million, two hundred two thousand, two hundred twenty-one".