21342200212 has 12 divisors (see below), whose sum is σ = 37350333076. Its totient is φ = 10670676480.

The previous prime is 21342200203. The next prime is 21342200221. The reversal of 21342200212 is 21200224312.

It is an interprime number because it is at equal distance from previous prime (21342200203) and next prime (21342200221).

It can be written as a sum of positive squares in 2 ways, for example, as 6066228996 + 15275971216 = 77886^2 + 123596^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21342200212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25588 + ... + 208180.

Almost surely, 2^21342200212 is an apocalyptic number.

It is an amenable number.

21342200212 is a deficient number, since it is larger than the sum of its proper divisors (16008132864).

21342200212 is a wasteful number, since it uses less digits than its factorization.

21342200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211818 (or 211816 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21342200212 its reverse (21200224312), we get a palindrome (42542424524).

The spelling of 21342200212 in words is "twenty-one billion, three hundred forty-two million, two hundred thousand, two hundred twelve".