21134300332221 has 24 divisors (see below), whose sum is σ = 30589431548000. Its totient is φ = 14060869659936.

The previous prime is 21134300332219. The next prime is 21134300332241. The reversal of 21134300332221 is 12223300343112.

21134300332221 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 4 + 300 + 332 + 2 + 21 = 666.

It is not a de Polignac number, because 21134300332221 - 2¹ = 21134300332219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21134300332241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228514230 + ... + 228606696.

Almost surely, 2^{21134300332221} is an apocalyptic number.

It is an amenable number.

21134300332221 is a deficient number, since it is larger than the sum of its proper divisors (9455131215779).

21134300332221 is a wasteful number, since it uses less digits than its factorization.

21134300332221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143865 (or 143862 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 21134300332221 its reverse (12223300343112), we get a palindrome (33357600675333).

The spelling of 21134300332221 in words is "twenty-one trillion, one hundred thirty-four billion, three hundred million, three hundred thirty-two thousand, two hundred twenty-one".