21240314221332 has 24 divisors (see below), whose sum is σ = 49563203015872. Its totient is φ = 7079751907200.

The previous prime is 21240314221213. The next prime is 21240314221337. The reversal of 21240314221332 is 23312241304212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21240314221332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21240314221337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43853269 + ... + 44334972.

Almost surely, 2^{21240314221332} is an apocalyptic number.

It is an amenable number.

21240314221332 is an abundant number, since it is smaller than the sum of its proper divisors (28322888794540).

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

21240314221332 is a wasteful number, since it uses less digits than its factorization.

21240314221332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88208319 (or 88208317 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 21240314221332 its reverse (23312241304212), we get a palindrome (44552555525544).

The spelling of 21240314221332 in words is "twenty-one trillion, two hundred forty billion, three hundred fourteen million, two hundred twenty-one thousand, three hundred thirty-two".