21010221133332 has 96 divisors (see below), whose sum is σ = 50782878720000. Its totient is φ = 6752776310784.

The previous prime is 21010221133331. The next prime is 21010221133373. The reversal of 21010221133332 is 23333112201012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010221133331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 840766294 + ... + 840791282.

It is an arithmetic number, because the mean of its divisors is an integer number (528988320000).

Almost surely, 2^{21010221133332} is an apocalyptic number.

It is an amenable number.

21010221133332 is an abundant number, since it is smaller than the sum of its proper divisors (29772657586668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21010221133332 is a wasteful number, since it uses less digits than its factorization.

21010221133332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28193 (or 28191 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21010221133332 its reverse (23333112201012), we get a palindrome (44343333334344).

The spelling of 21010221133332 in words is "twenty-one trillion, ten billion, two hundred twenty-one million, one hundred thirty-three thousand, three hundred thirty-two".