21216030532110 has 96 divisors (see below), whose sum is σ = 56435674097088. Its totient is φ = 5527827901440.

The previous prime is 21216030532097. The next prime is 21216030532117. The reversal of 21216030532110 is 1123503061212.

21216030532110 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 603 + 0 + 53 + 2 + 1 + 1 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21216030532117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8078242 + ... + 10377381.

It is an arithmetic number, because the mean of its divisors is an integer number (587871605178).

Almost surely, 2^{21216030532110} is an apocalyptic number.

21216030532110 is an abundant number, since it is smaller than the sum of its proper divisors (35219643564978).

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

21216030532110 is a wasteful number, since it uses less digits than its factorization.

21216030532110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18455930 (or 18455927 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 21216030532110 its reverse (1123503061212), we get a palindrome (22339533593322).

The spelling of 21216030532110 in words is "twenty-one trillion, two hundred sixteen billion, thirty million, five hundred thirty-two thousand, one hundred ten".