1200202201221 has 16 divisors (see below), whose sum is σ = 1619449603200. Its totient is φ = 790585697088.

The previous prime is 1200202201217. The next prime is 1200202201273. The reversal of 1200202201221 is 1221022020021.

It is not a de Polignac number, because 1200202201221 - 2² = 1200202201217 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200202201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200202206221) 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 15 ways as a sum of consecutive naturals, for example, 4994506 + ... + 5229291.

It is an arithmetic number, because the mean of its divisors is an integer number (101215600200).

Almost surely, 2^{1200202201221} is an apocalyptic number.

It is an amenable number.

1200202201221 is a deficient number, since it is larger than the sum of its proper divisors (419247401979).

1200202201221 is a wasteful number, since it uses less digits than its factorization.

1200202201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10224268.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1200202201221 its reverse (1221022020021), we get a palindrome (2421224221242).

The spelling of 1200202201221 in words is "one trillion, two hundred billion, two hundred two million, two hundred one thousand, two hundred twenty-one".