10202323221 has 24 divisors (see below), whose sum is σ = 15653751360. Its totient is φ = 6566998032.

The previous prime is 10202323207. The next prime is 10202323249. The reversal of 10202323221 is 12232320201.

It is not a de Polignac number, because 10202323221 - 2⁵ = 10202323189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10202323194 and 10202323203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202323121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201945 + ... + 247358.

It is an arithmetic number, because the mean of its divisors is an integer number (652239640).

Almost surely, 2^10202323221 is an apocalyptic number.

It is an amenable number.

10202323221 is a deficient number, since it is larger than the sum of its proper divisors (5451428139).

10202323221 is an equidigital number, since it uses as much as digits as its factorization.

10202323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449370 (or 449335 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 10202323221 its reverse (12232320201), we get a palindrome (22434643422).

The spelling of 10202323221 in words is "ten billion, two hundred two million, three hundred twenty-three thousand, two hundred twenty-one".