10021321033 has 4 divisors (see below), whose sum is σ = 10021997700. Its totient is φ = 10020644368.

The previous prime is 10021321001. The next prime is 10021321039. The reversal of 10021321033 is 33012312001.

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 8334411849 + 1686909184 = 91293^2 + 41072^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021321033 - 2⁵ = 10021321001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021320998 and 10021321016.

It is not an unprimeable number, because it can be changed into a prime (10021321039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315610 + ... + 345907.

It is an arithmetic number, because the mean of its divisors is an integer number (2505499425).

Almost surely, 2^10021321033 is an apocalyptic number.

It is an amenable number.

10021321033 is a deficient number, since it is larger than the sum of its proper divisors (676667).

10021321033 is an equidigital number, since it uses as much as digits as its factorization.

10021321033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676666.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 10021321033 its reverse (33012312001), we get a palindrome (43033633034).

The spelling of 10021321033 in words is "ten billion, twenty-one million, three hundred twenty-one thousand, thirty-three".