22423205343021 has 16 divisors (see below), whose sum is σ = 34168833712128. Its totient is φ = 12813207750000.

The previous prime is 22423205342981. The next prime is 22423205343047. The reversal of 22423205343021 is 12034350232422.

It is not a de Polignac number, because 22423205343021 - 2⁹ = 22423205342509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22423205323021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3399396 + ... + 7510146.

It is an arithmetic number, because the mean of its divisors is an integer number (2135552107008).

Almost surely, 2^{22423205343021} is an apocalyptic number.

22423205343021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22423205343021 is a deficient number, since it is larger than the sum of its proper divisors (11745628369107).

22423205343021 is a wasteful number, since it uses less digits than its factorization.

22423205343021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370512.

The product of its (nonzero) digits is 69120, while the sum is 33.

Adding to 22423205343021 its reverse (12034350232422), we get a palindrome (34457555575443).

The spelling of 22423205343021 in words is "twenty-two trillion, four hundred twenty-three billion, two hundred five million, three hundred forty-three thousand, twenty-one".