21321133030 has 8 divisors (see below), whose sum is σ = 38378039472. Its totient is φ = 8528453208.

The previous prime is 21321133013. The next prime is 21321133033. The reversal of 21321133030 is 3033112312.

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

It is a junction number, because it is equal to n+sod(n) for n = 21321132989 and 21321133007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321133033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066056642 + ... + 1066056661.

It is an arithmetic number, because the mean of its divisors is an integer number (4797254934).

Almost surely, 2^21321133030 is an apocalyptic number.

21321133030 is a deficient number, since it is larger than the sum of its proper divisors (17056906442).

21321133030 is a wasteful number, since it uses less digits than its factorization.

21321133030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132113310.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21321133030 its reverse (3033112312), we get a palindrome (24354245342).

The spelling of 21321133030 in words is "twenty-one billion, three hundred twenty-one million, one hundred thirty-three thousand, thirty".