10021321443 has 16 divisors (see below), whose sum is σ = 15272732160. Its totient is φ = 5725664256.

The previous prime is 10021321439. The next prime is 10021321469. The reversal of 10021321443 is 34412312001.

10021321443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10021321443 - 2² = 10021321439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (10021321043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140323 + ... + 199331.

It is an arithmetic number, because the mean of its divisors is an integer number (954545760).

Almost surely, 2^10021321443 is an apocalyptic number.

10021321443 is a deficient number, since it is larger than the sum of its proper divisors (5251410717).

10021321443 is an equidigital number, since it uses as much as digits as its factorization.

10021321443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67106.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 10021321443 its reverse (34412312001), we get a palindrome (44433633444).

The spelling of 10021321443 in words is "ten billion, twenty-one million, three hundred twenty-one thousand, four hundred forty-three".