10123410021 has 4 divisors (see below), whose sum is σ = 13497880032. Its totient is φ = 6748940012.

The previous prime is 10123409909. The next prime is 10123410029. The reversal of 10123410021 is 12001432101.

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 10123410021 - 2¹⁹ = 10122885733 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10123410029) 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, 1687235001 + ... + 1687235006.

It is an arithmetic number, because the mean of its divisors is an integer number (3374470008).

Almost surely, 2^10123410021 is an apocalyptic number.

It is an amenable number.

10123410021 is a deficient number, since it is larger than the sum of its proper divisors (3374470011).

10123410021 is an equidigital number, since it uses as much as digits as its factorization.

10123410021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374470010.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 10123410021 its reverse (12001432101), we get a palindrome (22124842122).

The spelling of 10123410021 in words is "ten billion, one hundred twenty-three million, four hundred ten thousand, twenty-one".