10313211221 has 4 divisors (see below), whose sum is σ = 10313925312. Its totient is φ = 10312497132.

The previous prime is 10313211187. The next prime is 10313211281. The reversal of 10313211221 is 12211231301.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12211231301 = 3967 ⋅3078203.

It is a cyclic number.

It is not a de Polignac number, because 10313211221 - 2¹⁰ = 10313210197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10313211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10313211281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334925 + ... + 364418.

It is an arithmetic number, because the mean of its divisors is an integer number (2578481328).

Almost surely, 2^10313211221 is an apocalyptic number.

It is an amenable number.

10313211221 is a deficient number, since it is larger than the sum of its proper divisors (714091).

10313211221 is an equidigital number, since it uses as much as digits as its factorization.

10313211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714090.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10313211221 its reverse (12211231301), we get a palindrome (22524442522).

The spelling of 10313211221 in words is "ten billion, three hundred thirteen million, two hundred eleven thousand, two hundred twenty-one".