21422422411 has 4 divisors (see below), whose sum is σ = 23070301072. Its totient is φ = 19774543752.

The previous prime is 21422422379. The next prime is 21422422429. The reversal of 21422422411 is 11422422412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21422422411 - 2⁵ = 21422422379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21422452411) 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, 823939311 + ... + 823939336.

It is an arithmetic number, because the mean of its divisors is an integer number (5767575268).

Almost surely, 2^21422422411 is an apocalyptic number.

21422422411 is a deficient number, since it is larger than the sum of its proper divisors (1647878661).

21422422411 is a wasteful number, since it uses less digits than its factorization.

21422422411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647878660.

The product of its digits is 2048, while the sum is 25.

Adding to 21422422411 its reverse (11422422412), we get a palindrome (32844844823).

Subtracting from 21422422411 its reverse (11422422412), we obtain a palindrome (9999999999).

The spelling of 21422422411 in words is "twenty-one billion, four hundred twenty-two million, four hundred twenty-two thousand, four hundred eleven".