10635010021 has 4 divisors (see below), whose sum is σ = 10635636352. Its totient is φ = 10634383692.

The previous prime is 10635010003. The next prime is 10635010027. The reversal of 10635010021 is 12001053601.

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: 12001053601 = 67 ⋅179120203.

It is a cyclic number.

It is not a de Polignac number, because 10635010021 - 2⁵ = 10635009989 is a prime.

It is a super-2 number, since 2×10635010021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10635010027) 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, 286965 + ... + 321898.

It is an arithmetic number, because the mean of its divisors is an integer number (2658909088).

Almost surely, 2^10635010021 is an apocalyptic number.

It is an amenable number.

10635010021 is a deficient number, since it is larger than the sum of its proper divisors (626331).

10635010021 is an equidigital number, since it uses as much as digits as its factorization.

10635010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626330.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 10635010021 its reverse (12001053601), we get a palindrome (22636063622).

The spelling of 10635010021 in words is "ten billion, six hundred thirty-five million, ten thousand, twenty-one".