210102221121 has 24 divisors (see below), whose sum is σ = 304438155840. Its totient is φ = 128826824256.

The previous prime is 210102221047. The next prime is 210102221137. The reversal of 210102221121 is 121122201012.

It is not a de Polignac number, because 210102221121 - 2¹¹ = 210102219073 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 210102221121.

It is not an unprimeable number, because it can be changed into a prime (210102225121) 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 23 ways as a sum of consecutive naturals, for example, 607581 + ... + 888458.

It is an arithmetic number, because the mean of its divisors is an integer number (12684923160).

Almost surely, 2^210102221121 is an apocalyptic number.

It is an amenable number.

210102221121 is a deficient number, since it is larger than the sum of its proper divisors (94335934719).

210102221121 is a wasteful number, since it uses less digits than its factorization.

210102221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496345 (or 1496332 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210102221121 its reverse (121122201012), we get a palindrome (331224422133).

The spelling of 210102221121 in words is "two hundred ten billion, one hundred two million, two hundred twenty-one thousand, one hundred twenty-one".