10232313221 has 4 divisors (see below), whose sum is σ = 11019414252. Its totient is φ = 9445212192.

The previous prime is 10232313211. The next prime is 10232313227. The reversal of 10232313221 is 12231323201.

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 4639516996 + 5592796225 = 68114^2 + 74785^2 .

It is a de Polignac number, because none of the positive numbers 2^k-10232313221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10232313193 and 10232313202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10232313227) 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, 393550496 + ... + 393550521.

It is an arithmetic number, because the mean of its divisors is an integer number (2754853563).

Almost surely, 2^10232313221 is an apocalyptic number.

It is an amenable number.

10232313221 is a deficient number, since it is larger than the sum of its proper divisors (787101031).

10232313221 is an equidigital number, since it uses as much as digits as its factorization.

10232313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787101030.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 10232313221 its reverse (12231323201), we get a palindrome (22463636422).

The spelling of 10232313221 in words is "ten billion, two hundred thirty-two million, three hundred thirteen thousand, two hundred twenty-one".