21144022334 has 8 divisors (see below), whose sum is σ = 31722665040. Its totient is φ = 10569800656.

The previous prime is 21144022309. The next prime is 21144022363. The reversal of 21144022334 is 43322044112.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1093274 + ... + 1112445.

It is an arithmetic number, because the mean of its divisors is an integer number (3965333130).

Almost surely, 2^21144022334 is an apocalyptic number.

21144022334 is a deficient number, since it is larger than the sum of its proper divisors (10578642706).

21144022334 is a wasteful number, since it uses less digits than its factorization.

21144022334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210514.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21144022334 its reverse (43322044112), we get a palindrome (64466066446).

The spelling of 21144022334 in words is "twenty-one billion, one hundred forty-four million, twenty-two thousand, three hundred thirty-four".