10021223123 has 4 divisors (see below), whose sum is σ = 10021545288. Its totient is φ = 10020900960.

The previous prime is 10021223011. The next prime is 10021223129. The reversal of 10021223123 is 32132212001.

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 10021223123 - 2¹² = 10021219027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10021223129) 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, 108758 + ... + 178523.

It is an arithmetic number, because the mean of its divisors is an integer number (2505386322).

Almost surely, 2^10021223123 is an apocalyptic number.

10021223123 is a deficient number, since it is larger than the sum of its proper divisors (322165).

10021223123 is an equidigital number, since it uses as much as digits as its factorization.

10021223123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322164.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 10021223123 its reverse (32132212001), we get a palindrome (42153435124).

The spelling of 10021223123 in words is "ten billion, twenty-one million, two hundred twenty-three thousand, one hundred twenty-three".