21330224213 has 8 divisors (see below), whose sum is σ = 21475958400. Its totient is φ = 21184549200.

The previous prime is 21330224177. The next prime is 21330224231. The reversal of 21330224213 is 31242203312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21330224213 - 2¹² = 21330220117 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 (21330224263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 899888 + ... + 923286.

It is an arithmetic number, because the mean of its divisors is an integer number (2684494800).

Almost surely, 2^21330224213 is an apocalyptic number.

It is an amenable number.

21330224213 is a deficient number, since it is larger than the sum of its proper divisors (145734187).

21330224213 is a wasteful number, since it uses less digits than its factorization.

21330224213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29587.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21330224213 its reverse (31242203312), we get a palindrome (52572427525).

The spelling of 21330224213 in words is "twenty-one billion, three hundred thirty million, two hundred twenty-four thousand, two hundred thirteen".