21021210012332 has 48 divisors (see below), whose sum is σ = 37789238699520. Its totient is φ = 10226253989952.

The previous prime is 21021210012311. The next prime is 21021210012349. The reversal of 21021210012332 is 23321001212012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54029678 + ... + 54417354.

It is an arithmetic number, because the mean of its divisors is an integer number (787275806240).

Almost surely, 2^{21021210012332} is an apocalyptic number.

It is an amenable number.

21021210012332 is a deficient number, since it is larger than the sum of its proper divisors (16768028687188).

21021210012332 is a wasteful number, since it uses less digits than its factorization.

21021210012332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388950 (or 388948 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21021210012332 its reverse (23321001212012), we get a palindrome (44342211224344).

The spelling of 21021210012332 in words is "twenty-one trillion, twenty-one billion, two hundred ten million, twelve thousand, three hundred thirty-two".