21233300220423 has 24 divisors (see below), whose sum is σ = 30725574036768. Its totient is φ = 14130050743872.

The previous prime is 21233300220361. The next prime is 21233300220427. The reversal of 21233300220423 is 32402200333212.

21233300220423 is a `hidden beast` number, since 2 + 1 + 233 + 3 + 0 + 0 + 2 + 2 + 0 + 423 = 666.

It is not a de Polignac number, because 21233300220423 - 2¹² = 21233300216327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233300220427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13472065 + ... + 14965397.

It is an arithmetic number, because the mean of its divisors is an integer number (1280232251532).

Almost surely, 2^{21233300220423} is an apocalyptic number.

21233300220423 is a deficient number, since it is larger than the sum of its proper divisors (9492273816345).

21233300220423 is a wasteful number, since it uses less digits than its factorization.

21233300220423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496183 (or 1496180 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 21233300220423 its reverse (32402200333212), we get a palindrome (53635500553635).

The spelling of 21233300220423 in words is "twenty-one trillion, two hundred thirty-three billion, three hundred million, two hundred twenty thousand, four hundred twenty-three".