21013341212 has 24 divisors (see below), whose sum is σ = 36882361152. Its totient is φ = 10475556800.

The previous prime is 21013341169. The next prime is 21013341233. The reversal of 21013341212 is 21214331012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3688238 + ... + 3693930.

It is an arithmetic number, because the mean of its divisors is an integer number (1536765048).

Almost surely, 2^21013341212 is an apocalyptic number.

It is an amenable number.

21013341212 is a deficient number, since it is larger than the sum of its proper divisors (15869019940).

21013341212 is a wasteful number, since it uses less digits than its factorization.

21013341212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8269 (or 8267 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21013341212 its reverse (21214331012), we get a palindrome (42227672224).

The spelling of 21013341212 in words is "twenty-one billion, thirteen million, three hundred forty-one thousand, two hundred twelve".