21343024123212 has 24 divisors (see below), whose sum is σ = 54327697768512. Its totient is φ = 6467583067600.

The previous prime is 21343024123207. The next prime is 21343024123231. The reversal of 21343024123212 is 21232142034312.

It is a happy number.

21343024123212 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21343024123212² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21343024123212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80844788214 + ... + 80844788477.

It is an arithmetic number, because the mean of its divisors is an integer number (2263654073688).

Almost surely, 2^{21343024123212} is an apocalyptic number.

21343024123212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21343024123212 is an abundant number, since it is smaller than the sum of its proper divisors (32984673645300).

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

21343024123212 is a wasteful number, since it uses less digits than its factorization.

21343024123212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161689576709 (or 161689576707 counting only the distinct ones).

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

Adding to 21343024123212 its reverse (21232142034312), we get a palindrome (42575166157524).

The spelling of 21343024123212 in words is "twenty-one trillion, three hundred forty-three billion, twenty-four million, one hundred twenty-three thousand, two hundred twelve".