21424222419 has 16 divisors (see below), whose sum is σ = 29663692800. Its totient is φ = 13739302080.

The previous prime is 21424222399. The next prime is 21424222423. The reversal of 21424222419 is 91422242412.

It is not a de Polignac number, because 21424222419 - 2⁸ = 21424222163 is a prime.

It is a super-2 number, since 2×21424222419² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21424222419.

It is not an unprimeable number, because it can be changed into a prime (21424222429) 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, 674194 + ... + 705255.

It is an arithmetic number, because the mean of its divisors is an integer number (1853980800).

Almost surely, 2^21424222419 is an apocalyptic number.

21424222419 is a deficient number, since it is larger than the sum of its proper divisors (8239470381).

21424222419 is a wasteful number, since it uses less digits than its factorization.

21424222419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379650.

The product of its digits is 18432, while the sum is 33.

The spelling of 21424222419 in words is "twenty-one billion, four hundred twenty-four million, two hundred twenty-two thousand, four hundred nineteen".