10123021010123 has 4 divisors (see below), whose sum is σ = 11569166868720. Its totient is φ = 8676875151528.

The previous prime is 10123021010117. The next prime is 10123021010131. The reversal of 10123021010123 is 32101012032101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10123021010123 - 2⁴ = 10123021010107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10123021016123) 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, 723072929288 + ... + 723072929301.

It is an arithmetic number, because the mean of its divisors is an integer number (2892291717180).

Almost surely, 2^{10123021010123} is an apocalyptic number.

10123021010123 is a deficient number, since it is larger than the sum of its proper divisors (1446145858597).

10123021010123 is an equidigital number, since it uses as much as digits as its factorization.

10123021010123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446145858596.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10123021010123 its reverse (32101012032101), we get a palindrome (42224033042224).

The spelling of 10123021010123 in words is "ten trillion, one hundred twenty-three billion, twenty-one million, ten thousand, one hundred twenty-three".