21242824212 has 96 divisors (see below), whose sum is σ = 51620405760. Its totient is φ = 6794686080.

The previous prime is 21242824193. The next prime is 21242824243.

21242824212 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 21242824212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7916223 + ... + 7918905.

It is an arithmetic number, because the mean of its divisors is an integer number (537712560).

Almost surely, 2^21242824212 is an apocalyptic number.

It is an amenable number.

21242824212 is an abundant number, since it is smaller than the sum of its proper divisors (30377581548).

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

21242824212 is a wasteful number, since it uses less digits than its factorization.

21242824212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013 (or 3011 counting only the distinct ones).

The product of its digits is 8192, while the sum is 30.

The spelling of 21242824212 in words is "twenty-one billion, two hundred forty-two million, eight hundred twenty-four thousand, two hundred twelve".