21136016332 has 6 divisors (see below), whose sum is σ = 36988028588. Its totient is φ = 10568008164.

The previous prime is 21136016329. The next prime is 21136016353. The reversal of 21136016332 is 23361063112.

It is a self number, because there is not a number n which added to its sum of digits gives 21136016332.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2642002038 + ... + 2642002045.

Almost surely, 2^21136016332 is an apocalyptic number.

It is an amenable number.

21136016332 is a deficient number, since it is larger than the sum of its proper divisors (15852012256).

21136016332 is a wasteful number, since it uses less digits than its factorization.

21136016332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5284004087 (or 5284004085 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 21136016332 its reverse (23361063112), we get a palindrome (44497079444).

The spelling of 21136016332 in words is "twenty-one billion, one hundred thirty-six million, sixteen thousand, three hundred thirty-two".