210222202121 has 8 divisors (see below), whose sum is σ = 210546154944. Its totient is φ = 209898385200.

The previous prime is 210222202111. The next prime is 210222202123. The reversal of 210222202121 is 121202222012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 210222202121 - 2²² = 210218007817 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 210222202121.

It is not an unprimeable number, because it can be changed into a prime (210222202123) 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 7 ways as a sum of consecutive naturals, for example, 3313346 + ... + 3376196.

It is an arithmetic number, because the mean of its divisors is an integer number (26318269368).

Almost surely, 2^210222202121 is an apocalyptic number.

It is an amenable number.

210222202121 is a deficient number, since it is larger than the sum of its proper divisors (323952823).

210222202121 is an equidigital number, since it uses as much as digits as its factorization.

210222202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67951.

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

Adding to 210222202121 its reverse (121202222012), we get a palindrome (331424424133).

The spelling of 210222202121 in words is "two hundred ten billion, two hundred twenty-two million, two hundred two thousand, one hundred twenty-one".