210110221222121 has 32 divisors (see below), whose sum is σ = 233190965145600. Its totient is φ = 187721253720000.

The previous prime is 210110221222087. The next prime is 210110221222129. The reversal of 210110221222121 is 121222122011012.

It is a de Polignac number, because none of the positive numbers 2^k-210110221222121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210110221222093 and 210110221222102.

It is not an unprimeable number, because it can be changed into a prime (210110221222129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 815101826 + ... + 815359556.

It is an arithmetic number, because the mean of its divisors is an integer number (7287217660800).

Almost surely, 2^{210110221222121} is an apocalyptic number.

It is an amenable number.

210110221222121 is a deficient number, since it is larger than the sum of its proper divisors (23080743923479).

210110221222121 is a wasteful number, since it uses less digits than its factorization.

210110221222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263261.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 210110221222121 its reverse (121222122011012), we get a palindrome (331332343233133).

The spelling of 210110221222121 in words is "two hundred ten trillion, one hundred ten billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-one".