1202201220221 has 16 divisors (see below), whose sum is σ = 1243724401920. Its totient is φ = 1161263537280.

The previous prime is 1202201220217. The next prime is 1202201220247. The reversal of 1202201220221 is 1220221022021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1202201220221 - 2² = 1202201220217 is a prime.

It is a super-2 number, since 2×1202201220221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1202201220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202201220211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 23847440 + ... + 23897798.

It is an arithmetic number, because the mean of its divisors is an integer number (77732775120).

Almost surely, 2^{1202201220221} is an apocalyptic number.

It is an amenable number.

1202201220221 is a deficient number, since it is larger than the sum of its proper divisors (41523181699).

1202201220221 is a wasteful number, since it uses less digits than its factorization.

1202201220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56156.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1202201220221 its reverse (1220221022021), we get a palindrome (2422422242242).

The spelling of 1202201220221 in words is "one trillion, two hundred two billion, two hundred one million, two hundred twenty thousand, two hundred twenty-one".