21442422041 has 8 divisors (see below), whose sum is σ = 21609729504. Its totient is φ = 21275169760.

The previous prime is 21442422019. The next prime is 21442422047. The reversal of 21442422041 is 14022424412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21442422041 - 2¹⁴ = 21442405657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21442422041.

It is not an unprimeable number, because it can be changed into a prime (21442422047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1136501 + ... + 1155213.

It is an arithmetic number, because the mean of its divisors is an integer number (2701216188).

Almost surely, 2^21442422041 is an apocalyptic number.

It is an amenable number.

21442422041 is a deficient number, since it is larger than the sum of its proper divisors (167307463).

21442422041 is a wasteful number, since it uses less digits than its factorization.

21442422041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27591.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 21442422041 its reverse (14022424412), we get a palindrome (35464846453).

The spelling of 21442422041 in words is "twenty-one billion, four hundred forty-two million, four hundred twenty-two thousand, forty-one".