3221200121212 has 24 divisors (see below), whose sum is σ = 5650933579200. Its totient is φ = 1606650762816.

The previous prime is 3221200121197. The next prime is 3221200121213. The reversal of 3221200121212 is 2121210021223.

It is a super-2 number, since 2×3221200121212² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3221200121212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221200121213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3794589 + ... + 4565227.

It is an arithmetic number, because the mean of its divisors is an integer number (235455565800).

Almost surely, 2^{3221200121212} is an apocalyptic number.

It is an amenable number.

3221200121212 is a deficient number, since it is larger than the sum of its proper divisors (2429733457988).

3221200121212 is a wasteful number, since it uses less digits than its factorization.

3221200121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773205 (or 773203 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 3221200121212 its reverse (2121210021223), we get a palindrome (5342410142435).

The spelling of 3221200121212 in words is "three trillion, two hundred twenty-one billion, two hundred million, one hundred twenty-one thousand, two hundred twelve".