21120440132023 has 4 divisors (see below), whose sum is σ = 21120816659848. Its totient is φ = 21120063604200.

The previous prime is 21120440132021. The next prime is 21120440132069. The reversal of 21120440132023 is 32023104402112.

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 21120440132023 - 2¹ = 21120440132021 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 (21120440132021) 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, 188179761 + ... + 188291962.

It is an arithmetic number, because the mean of its divisors is an integer number (5280204164962).

Almost surely, 2^{21120440132023} is an apocalyptic number.

21120440132023 is a deficient number, since it is larger than the sum of its proper divisors (376527825).

21120440132023 is an equidigital number, since it uses as much as digits as its factorization.

21120440132023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376527824.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21120440132023 its reverse (32023104402112), we get a palindrome (53143544534135).

The spelling of 21120440132023 in words is "twenty-one trillion, one hundred twenty billion, four hundred forty million, one hundred thirty-two thousand, twenty-three".