13421205212 has 24 divisors (see below), whose sum is σ = 24127408704. Its totient is φ = 6527742912.

The previous prime is 13421205209. The next prime is 13421205223. The reversal of 13421205212 is 21250212431.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921773 + ... + 936219.

It is an arithmetic number, because the mean of its divisors is an integer number (1005308696).

Almost surely, 2^13421205212 is an apocalyptic number.

It is an amenable number.

13421205212 is a deficient number, since it is larger than the sum of its proper divisors (10706203492).

13421205212 is a wasteful number, since it uses less digits than its factorization.

13421205212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20765 (or 20763 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 13421205212 its reverse (21250212431), we get a palindrome (34671417643).

The spelling of 13421205212 in words is "thirteen billion, four hundred twenty-one million, two hundred five thousand, two hundred twelve".