202201221200221 has 4 divisors (see below), whose sum is σ = 202330258356352. Its totient is φ = 202072184044092.

The previous prime is 202201221200203. The next prime is 202201221200263. The reversal of 202201221200221 is 122002122102202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202201221200221 - 2¹³ = 202201221192029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202201221200621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64518575715 + ... + 64518578848.

It is an arithmetic number, because the mean of its divisors is an integer number (50582564589088).

Almost surely, 2^{202201221200221} is an apocalyptic number.

It is an amenable number.

202201221200221 is a deficient number, since it is larger than the sum of its proper divisors (129037156131).

202201221200221 is a wasteful number, since it uses less digits than its factorization.

202201221200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129037156130.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 202201221200221 its reverse (122002122102202), we get a palindrome (324203343302423).

The spelling of 202201221200221 in words is "two hundred two trillion, two hundred one billion, two hundred twenty-one million, two hundred thousand, two hundred twenty-one".