10221321013 has 4 divisors (see below), whose sum is σ = 10223424288. Its totient is φ = 10219217740.

The previous prime is 10221321007. The next prime is 10221321067. The reversal of 10221321013 is 31012312201.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10221321013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221351013) 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, 1044331 + ... + 1054072.

It is an arithmetic number, because the mean of its divisors is an integer number (2555856072).

Almost surely, 2^10221321013 is an apocalyptic number.

It is an amenable number.

10221321013 is a deficient number, since it is larger than the sum of its proper divisors (2103275).

10221321013 is an equidigital number, since it uses as much as digits as its factorization.

10221321013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103274.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 10221321013 its reverse (31012312201), we get a palindrome (41233633214).

The spelling of 10221321013 in words is "ten billion, two hundred twenty-one million, three hundred twenty-one thousand, thirteen".