202221211210221 has 8 divisors (see below), whose sum is σ = 308146607558464. Its totient is φ = 115554977834400.

The previous prime is 202221211210163. The next prime is 202221211210241. The reversal of 202221211210221 is 122012112122202.

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

It is not a de Polignac number, because 202221211210221 - 2¹³ = 202221211202029 is a prime.

It is a super-2 number, since 2×202221211210221² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 9629581486201 = 202221211210221 / (2 + 0 + 2 + 2 + 2 + 1 + 2 + 1 + 1 + 2 + 1 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221211210241) 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 7 ways as a sum of consecutive naturals, for example, 4814790743080 + ... + 4814790743121.

It is an arithmetic number, because the mean of its divisors is an integer number (38518325944808).

Almost surely, 2^{202221211210221} is an apocalyptic number.

202221211210221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202221211210221 is a deficient number, since it is larger than the sum of its proper divisors (105925396348243).

202221211210221 is an equidigital number, since it uses as much as digits as its factorization.

202221211210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9629581486211.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 202221211210221 its reverse (122012112122202), we get a palindrome (324233323332423).

The spelling of 202221211210221 in words is "two hundred two trillion, two hundred twenty-one billion, two hundred eleven million, two hundred ten thousand, two hundred twenty-one".