21412234212 has 24 divisors (see below), whose sum is σ = 49993485696. Its totient is φ = 7132896288.

The previous prime is 21412234201. The next prime is 21412234229. The reversal of 21412234212 is 21243221412.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544603 + ... + 582594.

It is an arithmetic number, because the mean of its divisors is an integer number (2083061904).

Almost surely, 2^21412234212 is an apocalyptic number.

It is an amenable number.

21412234212 is an abundant number, since it is smaller than the sum of its proper divisors (28581251484).

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

21412234212 is a wasteful number, since it uses less digits than its factorization.

21412234212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128787 (or 1128785 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

Adding to 21412234212 its reverse (21243221412), we get a palindrome (42655455624).

The spelling of 21412234212 in words is "twenty-one billion, four hundred twelve million, two hundred thirty-four thousand, two hundred twelve".