21332528106 has 32 divisors (see below), whose sum is σ = 44859944448. Its totient is φ = 6749748720.

The previous prime is 21332528101. The next prime is 21332528111. The reversal of 21332528106 is 60182523312.

It is an interprime number because it is at equal distance from previous prime (21332528101) and next prime (21332528111).

It is not an unprimeable number, because it can be changed into a prime (21332528101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571936 + ... + 608091.

It is an arithmetic number, because the mean of its divisors is an integer number (1401873264).

Almost surely, 2^21332528106 is an apocalyptic number.

21332528106 is an abundant number, since it is smaller than the sum of its proper divisors (23527416342).

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

21332528106 is a wasteful number, since it uses less digits than its factorization.

21332528106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180186.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 21332528106 in words is "twenty-one billion, three hundred thirty-two million, five hundred twenty-eight thousand, one hundred six".