10215302221 has 4 divisors (see below), whose sum is σ = 10309020700. Its totient is φ = 10121583744.

The previous prime is 10215302219. The next prime is 10215302257. The reversal of 10215302221 is 12220351201.

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 2744292996 + 7471009225 = 52386^2 + 86435^2 .

It is a cyclic number.

It is not a de Polignac number, because 10215302221 - 2¹ = 10215302219 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 (10215302281) 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 3 ways as a sum of consecutive naturals, for example, 46859076 + ... + 46859293.

It is an arithmetic number, because the mean of its divisors is an integer number (2577255175).

Almost surely, 2^10215302221 is an apocalyptic number.

It is an amenable number.

10215302221 is a deficient number, since it is larger than the sum of its proper divisors (93718479).

10215302221 is an equidigital number, since it uses as much as digits as its factorization.

10215302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93718478.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 10215302221 its reverse (12220351201), we get a palindrome (22435653422).

The spelling of 10215302221 in words is "ten billion, two hundred fifteen million, three hundred two thousand, two hundred twenty-one".