21332240344212 has 96 divisors (see below), whose sum is σ = 58852541368320. Its totient is φ = 5884257778560.

The previous prime is 21332240344201. The next prime is 21332240344213. The reversal of 21332240344212 is 21244304223312.

It is a happy number.

It is a super-2 number, since 2×21332240344212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332240344213) 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, 28884387 + ... + 29613717.

It is an arithmetic number, because the mean of its divisors is an integer number (613047305920).

Almost surely, 2^{21332240344212} is an apocalyptic number.

It is an amenable number.

21332240344212 is an abundant number, since it is smaller than the sum of its proper divisors (37520301024108).

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

21332240344212 is a wasteful number, since it uses less digits than its factorization.

21332240344212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741381 (or 741379 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 21332240344212 its reverse (21244304223312), we get a palindrome (42576544567524).

The spelling of 21332240344212 in words is "twenty-one trillion, three hundred thirty-two billion, two hundred forty million, three hundred forty-four thousand, two hundred twelve".