21231230020330 has 64 divisors (see below), whose sum is σ = 41951669040000. Its totient is φ = 7672079358720.

The previous prime is 21231230020279. The next prime is 21231230020387. The reversal of 21231230020330 is 3302003213212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144603796 + ... + 144750544.

It is an arithmetic number, because the mean of its divisors is an integer number (655494828750).

Almost surely, 2^{21231230020330} is an apocalyptic number.

21231230020330 is a deficient number, since it is larger than the sum of its proper divisors (20720439019670).

21231230020330 is a wasteful number, since it uses less digits than its factorization.

21231230020330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154999.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21231230020330 its reverse (3302003213212), we get a palindrome (24533233233542).

The spelling of 21231230020330 in words is "twenty-one trillion, two hundred thirty-one billion, two hundred thirty million, twenty thousand, three hundred thirty".