202201222121 has 8 divisors (see below), whose sum is σ = 202680730560. Its totient is φ = 201721800528.

The previous prime is 202201222037. The next prime is 202201222123. The reversal of 202201222121 is 121222102202.

It is a happy number.

202201222121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202201222121 is a prime.

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 202201222121.

It is not an unprimeable number, because it can be changed into a prime (202201222123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8921015 + ... + 8943651.

It is an arithmetic number, because the mean of its divisors is an integer number (25335091320).

Almost surely, 2^202201222121 is an apocalyptic number.

It is an amenable number.

202201222121 is a deficient number, since it is larger than the sum of its proper divisors (479508439).

202201222121 is a wasteful number, since it uses less digits than its factorization.

202201222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43423.

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

Adding to 202201222121 its reverse (121222102202), we get a palindrome (323423324323).

The spelling of 202201222121 in words is "two hundred two billion, two hundred one million, two hundred twenty-two thousand, one hundred twenty-one".