10065010721 has 4 divisors (see below), whose sum is σ = 10192416000. Its totient is φ = 9937605444.

The previous prime is 10065010663. The next prime is 10065010723. The reversal of 10065010721 is 12701056001.

10065010721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12701056001 = 35149 ⋅361349.

It is a cyclic number.

It is not a de Polignac number, because 10065010721 - 2²² = 10060816417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10065010723) 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 3 ways as a sum of consecutive naturals, for example, 63702521 + ... + 63702678.

It is an arithmetic number, because the mean of its divisors is an integer number (2548104000).

Almost surely, 2^10065010721 is an apocalyptic number.

It is an amenable number.

10065010721 is a deficient number, since it is larger than the sum of its proper divisors (127405279).

10065010721 is an equidigital number, since it uses as much as digits as its factorization.

10065010721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127405278.

The product of its (nonzero) digits is 420, while the sum is 23.

Adding to 10065010721 its reverse (12701056001), we get a palindrome (22766066722).

The spelling of 10065010721 in words is "ten billion, sixty-five million, ten thousand, seven hundred twenty-one".