21413043124212 has 48 divisors (see below), whose sum is σ = 50032120057920. Its totient is φ = 7127920171008.

The previous prime is 21413043124211. The next prime is 21413043124219. The reversal of 21413043124212 is 21242134031412.

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 21413043124212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21413043124211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45210658 + ... + 45681830.

It is an arithmetic number, because the mean of its divisors is an integer number (1042335834540).

Almost surely, 2^{21413043124212} is an apocalyptic number.

It is an amenable number.

21413043124212 is an abundant number, since it is smaller than the sum of its proper divisors (28619076933708).

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

21413043124212 is a wasteful number, since it uses less digits than its factorization.

21413043124212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476352 (or 476350 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 21413043124212 its reverse (21242134031412), we get a palindrome (42655177155624).

The spelling of 21413043124212 in words is "twenty-one trillion, four hundred thirteen billion, forty-three million, one hundred twenty-four thousand, two hundred twelve".