10012320221 has 8 divisors (see below), whose sum is σ = 10603783224. Its totient is φ = 9421135360.

The previous prime is 10012320211. The next prime is 10012320271. The reversal of 10012320221 is 12202321001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 346480996 + 9665839225 = 18614^2 + 98315^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10012320221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10012320196 and 10012320205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10012320211) 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 7 ways as a sum of consecutive naturals, for example, 7001 + ... + 141681.

It is an arithmetic number, because the mean of its divisors is an integer number (1325472903).

Almost surely, 2^10012320221 is an apocalyptic number.

It is an amenable number.

10012320221 is a deficient number, since it is larger than the sum of its proper divisors (591463003).

10012320221 is a wasteful number, since it uses less digits than its factorization.

10012320221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139071.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10012320221 its reverse (12202321001), we get a palindrome (22214641222).

The spelling of 10012320221 in words is "ten billion, twelve million, three hundred twenty thousand, two hundred twenty-one".