20123033003123 has 4 divisors (see below), whose sum is σ = 20613838686168. Its totient is φ = 19632227320080.

The previous prime is 20123033003083. The next prime is 20123033003141. The reversal of 20123033003123 is 32130033032102.

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 20123033003123 - 2¹⁰ = 20123033002099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123033000123) 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, 245402841461 + ... + 245402841542.

It is an arithmetic number, because the mean of its divisors is an integer number (5153459671542).

Almost surely, 2^{20123033003123} is an apocalyptic number.

20123033003123 is a deficient number, since it is larger than the sum of its proper divisors (490805683045).

20123033003123 is an equidigital number, since it uses as much as digits as its factorization.

20123033003123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490805683044.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20123033003123 its reverse (32130033032102), we get a palindrome (52253066035225).

The spelling of 20123033003123 in words is "twenty trillion, one hundred twenty-three billion, thirty-three million, three thousand, one hundred twenty-three".