21153014332 has 12 divisors (see below), whose sum is σ = 37064817160. Its totient is φ = 10563066576.

The previous prime is 21153014297. The next prime is 21153014341. The reversal of 21153014332 is 23341035112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21153014297 and 21153014306.

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, 3356607 + ... + 3362902.

Almost surely, 2^21153014332 is an apocalyptic number.

It is an amenable number.

21153014332 is a deficient number, since it is larger than the sum of its proper divisors (15911802828).

21153014332 is a wasteful number, since it uses less digits than its factorization.

21153014332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6720300 (or 6720298 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 21153014332 its reverse (23341035112), we get a palindrome (44494049444).

The spelling of 21153014332 in words is "twenty-one billion, one hundred fifty-three million, fourteen thousand, three hundred thirty-two".