21442233224413 has 16 divisors (see below), whose sum is σ = 22698649036800. Its totient is φ = 20224777017600.

The previous prime is 21442233224389. The next prime is 21442233224513. The reversal of 21442233224413 is 31442233224412.

It is a cyclic number.

It is not a de Polignac number, because 21442233224413 - 2¹³ = 21442233216221 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 (21442233224213) 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, 30181438 + ... + 30883711.

It is an arithmetic number, because the mean of its divisors is an integer number (1418665564800).

Almost surely, 2^{21442233224413} is an apocalyptic number.

It is an amenable number.

21442233224413 is a deficient number, since it is larger than the sum of its proper divisors (1256415812387).

21442233224413 is a wasteful number, since it uses less digits than its factorization.

21442233224413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61065468.

The product of its digits is 221184, while the sum is 37.

Adding to 21442233224413 its reverse (31442233224412), we get a palindrome (52884466448825).

Subtracting 21442233224413 from its reverse (31442233224412), we obtain a palindrome (9999999999999).

The spelling of 21442233224413 in words is "twenty-one trillion, four hundred forty-two billion, two hundred thirty-three million, two hundred twenty-four thousand, four hundred thirteen".