21422024442 has 96 divisors (see below), whose sum is σ = 59095370880. Its totient is φ = 5454933120.

The previous prime is 21422024401. The next prime is 21422024443. The reversal of 21422024442 is 24442022412.

21422024442 is a `hidden beast` number, since 2 + 14 + 2 + 202 + 4 + 442 = 666.

It is a super-2 number, since 2×21422024442² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21422024443) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 177984 + ... + 272987.

It is an arithmetic number, because the mean of its divisors is an integer number (615576780).

Almost surely, 2^21422024442 is an apocalyptic number.

21422024442 is an abundant number, since it is smaller than the sum of its proper divisors (37673346438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21422024442 is a wasteful number, since it uses less digits than its factorization.

21422024442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451028 (or 451025 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 21422024442 its reverse (24442022412), we get a palindrome (45864046854).

The spelling of 21422024442 in words is "twenty-one billion, four hundred twenty-two million, twenty-four thousand, four hundred forty-two".