10021310221 has 8 divisors (see below), whose sum is σ = 10795539384. Its totient is φ = 9247560960.

The previous prime is 10021310219. The next prime is 10021310227. The reversal of 10021310221 is 12201312001.

It can be written as a sum of positive squares in 4 ways, for example, as 271920100 + 9749390121 = 16490^2 + 98739^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 10021310221 - 2¹ = 10021310219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021310227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76000 + ... + 160681.

It is an arithmetic number, because the mean of its divisors is an integer number (1349442423).

Almost surely, 2^10021310221 is an apocalyptic number.

It is an amenable number.

10021310221 is a deficient number, since it is larger than the sum of its proper divisors (774229163).

10021310221 is a wasteful number, since it uses less digits than its factorization.

10021310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239951.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10021310221 its reverse (12201312001), we get a palindrome (22222622222).

The spelling of 10021310221 in words is "ten billion, twenty-one million, three hundred ten thousand, two hundred twenty-one".