12201021210212 has 18 divisors (see below), whose sum is σ = 21561098707638. Its totient is φ = 6041282325792.

The previous prime is 12201021210151. The next prime is 12201021210223. The reversal of 12201021210212 is 21201212010221.

It can be written as a sum of positive squares in only one way, i.e., 11659875598336 + 541145611876 = 3414656^2 + 735626^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 143715473 + ... + 143800344.

It is an arithmetic number, because the mean of its divisors is an integer number (1197838817091).

Almost surely, 2^{12201021210212} is an apocalyptic number.

It is an amenable number.

12201021210212 is a deficient number, since it is larger than the sum of its proper divisors (9360077497426).

12201021210212 is a wasteful number, since it uses less digits than its factorization.

12201021210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287516027 (or 287515922 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12201021210212 its reverse (21201212010221), we get a palindrome (33402233220433).

The spelling of 12201021210212 in words is "twelve trillion, two hundred one billion, twenty-one million, two hundred ten thousand, two hundred twelve".