21330324023412 has 48 divisors (see below), whose sum is σ = 51398320168832. Its totient is φ = 6879722221440.

The previous prime is 21330324023389. The next prime is 21330324023479. The reversal of 21330324023412 is 21432042303312.

It is a happy number.

It is a super-3 number, since 3×21330324023412³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21330324023412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132630328 + ... + 132791055.

Almost surely, 2^{21330324023412} is an apocalyptic number.

It is an amenable number.

21330324023412 is an abundant number, since it is smaller than the sum of its proper divisors (30067996145420).

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

21330324023412 is a wasteful number, since it uses less digits than its factorization.

21330324023412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265421608 (or 265421606 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 21330324023412 its reverse (21432042303312), we get a palindrome (42762366326724).

The spelling of 21330324023412 in words is "twenty-one trillion, three hundred thirty billion, three hundred twenty-four million, twenty-three thousand, four hundred twelve".