21422022413 has 4 divisors (see below), whose sum is σ = 23369479008. Its totient is φ = 19474565820.

The previous prime is 21422022379. The next prime is 21422022443. The reversal of 21422022413 is 31422022412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21422022413 - 2³⁴ = 4242153229 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 (21422022443) 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, 973728281 + ... + 973728302.

It is an arithmetic number, because the mean of its divisors is an integer number (5842369752).

Almost surely, 2^21422022413 is an apocalyptic number.

It is an amenable number.

21422022413 is a deficient number, since it is larger than the sum of its proper divisors (1947456595).

21422022413 is a wasteful number, since it uses less digits than its factorization.

21422022413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947456594.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 21422022413 its reverse (31422022412), we get a palindrome (52844044825).

Subtracting 21422022413 from its reverse (31422022412), we obtain a palindrome (9999999999).

The spelling of 21422022413 in words is "twenty-one billion, four hundred twenty-two million, twenty-two thousand, four hundred thirteen".