21404422324022 has 16 divisors (see below), whose sum is σ = 32269061998800. Its totient is φ = 10648132744800.

The previous prime is 21404422323997. The next prime is 21404422324027. The reversal of 21404422324022 is 22042322440412.

It is a self number, because there is not a number n which added to its sum of digits gives 21404422324022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21404422324027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15439697 + ... + 16768812.

It is an arithmetic number, because the mean of its divisors is an integer number (2016816374925).

Almost surely, 2^{21404422324022} is an apocalyptic number.

21404422324022 is a deficient number, since it is larger than the sum of its proper divisors (10864639674778).

21404422324022 is a wasteful number, since it uses less digits than its factorization.

21404422324022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32210191.

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 21404422324022 its reverse (22042322440412), we get a palindrome (43446744764434).

The spelling of 21404422324022 in words is "twenty-one trillion, four hundred four billion, four hundred twenty-two million, three hundred twenty-four thousand, twenty-two".