21250443402023 has 16 divisors (see below), whose sum is σ = 23412572400672. Its totient is φ = 19126704960000.

The previous prime is 21250443401981. The next prime is 21250443402043. The reversal of 21250443402023 is 32020434405212.

It is not a de Polignac number, because 21250443402023 - 2⁸ = 21250443401767 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 (21250443402043) 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, 36768443 + ... + 37341923.

It is an arithmetic number, because the mean of its divisors is an integer number (1463285775042).

Almost surely, 2^{21250443402023} is an apocalyptic number.

21250443402023 is a deficient number, since it is larger than the sum of its proper divisors (2162128998649).

21250443402023 is a wasteful number, since it uses less digits than its factorization.

21250443402023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606946.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 21250443402023 its reverse (32020434405212), we get a palindrome (53270877807235).

The spelling of 21250443402023 in words is "twenty-one trillion, two hundred fifty billion, four hundred forty-three million, four hundred two thousand, twenty-three".