10023335621 has 4 divisors (see below), whose sum is σ = 10794361452. Its totient is φ = 9252309792.

The previous prime is 10023335549. The next prime is 10023335633. The reversal of 10023335621 is 12653332001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12653332001 = 4217 ⋅3000553.

It can be written as a sum of positive squares in 2 ways, for example, as 4444888900 + 5578446721 = 66670^2 + 74689^2 .

It is a cyclic number.

It is not a de Polignac number, because 10023335621 - 2³⁰ = 8949593797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10023335671) 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, 385512896 + ... + 385512921.

It is an arithmetic number, because the mean of its divisors is an integer number (2698590363).

Almost surely, 2^10023335621 is an apocalyptic number.

It is an amenable number.

10023335621 is a deficient number, since it is larger than the sum of its proper divisors (771025831).

10023335621 is an equidigital number, since it uses as much as digits as its factorization.

10023335621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771025830.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 10023335621 its reverse (12653332001), we get a palindrome (22676667622).

The spelling of 10023335621 in words is "ten billion, twenty-three million, three hundred thirty-five thousand, six hundred twenty-one".