21022231021332 has 12 divisors (see below), whose sum is σ = 49051872383136. Its totient is φ = 7007410340440.

The previous prime is 21022231021321. The next prime is 21022231021357. The reversal of 21022231021332 is 23312013222012.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×21022231021332² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875926292544 + ... + 875926292567.

It is an arithmetic number, because the mean of its divisors is an integer number (4087656031928).

Almost surely, 2^{21022231021332} is an apocalyptic number.

It is an amenable number.

21022231021332 is an abundant number, since it is smaller than the sum of its proper divisors (28029641361804).

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

21022231021332 is a wasteful number, since it uses less digits than its factorization.

21022231021332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751852585118 (or 1751852585116 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21022231021332 its reverse (23312013222012), we get a palindrome (44334244243344).

The spelling of 21022231021332 in words is "twenty-one trillion, twenty-two billion, two hundred thirty-one million, twenty-one thousand, three hundred thirty-two".