10000123021 has 8 divisors (see below), whose sum is σ = 11434720320. Its totient is φ = 8567027808.

The previous prime is 10000122991. The next prime is 10000123031. The reversal of 10000123021 is 12032100001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10000123021 - 2¹¹ = 10000120973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10000122989 and 10000123007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000123031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361216 + ... + 387913.

It is an arithmetic number, because the mean of its divisors is an integer number (1429340040).

Almost surely, 2^10000123021 is an apocalyptic number.

It is an amenable number.

10000123021 is a deficient number, since it is larger than the sum of its proper divisors (1434597299).

10000123021 is an equidigital number, since it uses as much as digits as its factorization.

10000123021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751043.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 10000123021 its reverse (12032100001), we get a palindrome (22032223022).

The spelling of 10000123021 in words is "ten billion, one hundred twenty-three thousand, twenty-one".