21282428212 has 12 divisors (see below), whose sum is σ = 37267788096. Its totient is φ = 10634488760.

The previous prime is 21282428207. The next prime is 21282428221.

21282428212 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1674214 + ... + 1686877.

It is an arithmetic number, because the mean of its divisors is an integer number (3105649008).

Almost surely, 2^21282428212 is an apocalyptic number.

It is an amenable number.

21282428212 is a deficient number, since it is larger than the sum of its proper divisors (15985359884).

21282428212 is a wasteful number, since it uses less digits than its factorization.

21282428212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3362678 (or 3362676 counting only the distinct ones).

The product of its digits is 16384, while the sum is 34.

The spelling of 21282428212 in words is "twenty-one billion, two hundred eighty-two million, four hundred twenty-eight thousand, two hundred twelve".