21343215152 has 20 divisors (see below), whose sum is σ = 47259976656. Its totient is φ = 9147092160.

The previous prime is 21343215149. The next prime is 21343215247. The reversal of 21343215152 is 25151234312.

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, 95282099 + ... + 95282322.

Almost surely, 2^21343215152 is an apocalyptic number.

It is an amenable number.

21343215152 is an abundant number, since it is smaller than the sum of its proper divisors (25916761504).

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

21343215152 is a wasteful number, since it uses less digits than its factorization.

21343215152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190564436 (or 190564430 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

Adding to 21343215152 its reverse (25151234312), we get a palindrome (46494449464).

The spelling of 21343215152 in words is "twenty-one billion, three hundred forty-three million, two hundred fifteen thousand, one hundred fifty-two".