21354022316 has 24 divisors (see below), whose sum is σ = 41087778816. Its totient is φ = 9629943120.

The previous prime is 21354022307. The next prime is 21354022321. The reversal of 21354022316 is 61322045312.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 1905116 + ... + 1916291.

It is an arithmetic number, because the mean of its divisors is an integer number (1711990784).

Almost surely, 2^21354022316 is an apocalyptic number.

It is an amenable number.

21354022316 is a deficient number, since it is larger than the sum of its proper divisors (19733756500).

21354022316 is a wasteful number, since it uses less digits than its factorization.

21354022316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3821549 (or 3821547 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 21354022316 its reverse (61322045312), we get a palindrome (82676067628).

The spelling of 21354022316 in words is "twenty-one billion, three hundred fifty-four million, twenty-two thousand, three hundred sixteen".