21302011211212 has 12 divisors (see below), whose sum is σ = 37471672572376. Its totient is φ = 10595819047680.

The previous prime is 21302011211167. The next prime is 21302011211227. The reversal of 21302011211212 is 21211211020312.

It is a self number, because there is not a number n which added to its sum of digits gives 21302011211212.

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, 13796638614 + ... + 13796640157.

Almost surely, 2^{21302011211212} is an apocalyptic number.

It is an amenable number.

21302011211212 is a deficient number, since it is larger than the sum of its proper divisors (16169661361164).

21302011211212 is a wasteful number, since it uses less digits than its factorization.

21302011211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27593278968 (or 27593278966 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 21302011211212 its reverse (21211211020312), we get a palindrome (42513222231524).

The spelling of 21302011211212 in words is "twenty-one trillion, three hundred two billion, eleven million, two hundred eleven thousand, two hundred twelve".