21201112230212 has 24 divisors (see below), whose sum is σ = 39373900030080. Its totient is φ = 9954267338880.

The previous prime is 21201112230149. The next prime is 21201112230217. The reversal of 21201112230212 is 21203221110212.

It is not an unprimeable number, because it can be changed into a prime (21201112230217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355073864 + ... + 355133567.

It is an arithmetic number, because the mean of its divisors is an integer number (1640579167920).

Almost surely, 2^{21201112230212} is an apocalyptic number.

It is an amenable number.

21201112230212 is a deficient number, since it is larger than the sum of its proper divisors (18172787799868).

21201112230212 is a wasteful number, since it uses less digits than its factorization.

21201112230212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710207891 (or 710207889 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21201112230212 its reverse (21203221110212), we get a palindrome (42404333340424).

The spelling of 21201112230212 in words is "twenty-one trillion, two hundred one billion, one hundred twelve million, two hundred thirty thousand, two hundred twelve".