10123330021 has 4 divisors (see below), whose sum is σ = 11569520032. Its totient is φ = 8677140012.

The previous prime is 10123329989. The next prime is 10123330033. The reversal of 10123330021 is 12003332101.

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: 12003332101 = 3137 ⋅3826373.

It is a cyclic number.

It is not a de Polignac number, because 10123330021 - 2⁵ = 10123329989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10123329977 and 10123330004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10123330421) 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, 723094995 + ... + 723095008.

It is an arithmetic number, because the mean of its divisors is an integer number (2892380008).

Almost surely, 2^10123330021 is an apocalyptic number.

It is an amenable number.

10123330021 is a deficient number, since it is larger than the sum of its proper divisors (1446190011).

10123330021 is an equidigital number, since it uses as much as digits as its factorization.

10123330021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446190010.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 10123330021 its reverse (12003332101), we get a palindrome (22126662122).

The spelling of 10123330021 in words is "ten billion, one hundred twenty-three million, three hundred thirty thousand, twenty-one".