10208064021 has 4 divisors (see below), whose sum is σ = 13610752032. Its totient is φ = 6805376012.

The previous prime is 10208064019. The next prime is 10208064047. The reversal of 10208064021 is 12046080201.

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.

It is a cyclic number.

It is not a de Polignac number, because 10208064021 - 2¹ = 10208064019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10208063982 and 10208064000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10208064221) 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, 1701344001 + ... + 1701344006.

It is an arithmetic number, because the mean of its divisors is an integer number (3402688008).

Almost surely, 2^10208064021 is an apocalyptic number.

It is an amenable number.

10208064021 is a deficient number, since it is larger than the sum of its proper divisors (3402688011).

10208064021 is an equidigital number, since it uses as much as digits as its factorization.

10208064021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3402688010.

The product of its (nonzero) digits is 768, while the sum is 24.

The spelling of 10208064021 in words is "ten billion, two hundred eight million, sixty-four thousand, twenty-one".