21102231331332 has 18 divisors (see below), whose sum is σ = 53341751420958. Its totient is φ = 7034077110432.

The previous prime is 21102231331331. The next prime is 21102231331387. The reversal of 21102231331332 is 23313313220112.

21102231331332 is a `hidden beast` number, since 2 + 1 + 1 + 0 + 2 + 2 + 313 + 313 + 32 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12913213502016 + 8189017829316 = 3593496^2 + 2861646^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×21102231331332² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21102231331296 and 21102231331305.

It is not an unprimeable number, because it can be changed into a prime (21102231331331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 293086546233 + ... + 293086546304.

Almost surely, 2^{21102231331332} is an apocalyptic number.

It is an amenable number.

21102231331332 is an abundant number, since it is smaller than the sum of its proper divisors (32239520089626).

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

21102231331332 is a wasteful number, since it uses less digits than its factorization.

21102231331332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586173092547 (or 586173092542 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 21102231331332 its reverse (23313313220112), we get a palindrome (44415544551444).

The spelling of 21102231331332 in words is "twenty-one trillion, one hundred two billion, two hundred thirty-one million, three hundred thirty-one thousand, three hundred thirty-two".