21442055335 has 8 divisors (see below), whose sum is σ = 25732720800. Its totient is φ = 17152141344.

The previous prime is 21442055317. The next prime is 21442055363. The reversal of 21442055335 is 53355024412.

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 21442055335 - 2²⁵ = 21408500903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21442055335.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123060 + ... + 240889.

It is an arithmetic number, because the mean of its divisors is an integer number (3216590100).

Almost surely, 2^21442055335 is an apocalyptic number.

21442055335 is a deficient number, since it is larger than the sum of its proper divisors (4290665465).

21442055335 is a wasteful number, since it uses less digits than its factorization.

21442055335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375737.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 21442055335 its reverse (53355024412), we get a palindrome (74797079747).

The spelling of 21442055335 in words is "twenty-one billion, four hundred forty-two million, fifty-five thousand, three hundred thirty-five".