20121232320023 has 16 divisors (see below), whose sum is σ = 20631053356032. Its totient is φ = 19612322208000.

The previous prime is 20121232320017. The next prime is 20121232320031. The reversal of 20121232320023 is 32002323212102.

It is a cyclic number.

It is not a de Polignac number, because 20121232320023 - 2²⁶ = 20121165211159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121232320083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884788433 + ... + 884811173.

It is an arithmetic number, because the mean of its divisors is an integer number (1289440834752).

Almost surely, 2^{20121232320023} is an apocalyptic number.

20121232320023 is a deficient number, since it is larger than the sum of its proper divisors (509821036009).

20121232320023 is a wasteful number, since it uses less digits than its factorization.

20121232320023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41786.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20121232320023 its reverse (32002323212102), we get a palindrome (52123555532125).

The spelling of 20121232320023 in words is "twenty trillion, one hundred twenty-one billion, two hundred thirty-two million, three hundred twenty thousand, twenty-three".