210112221120021 has 24 divisors (see below), whose sum is σ = 331102215347904. Its totient is φ = 127334474242560.

The previous prime is 210112221119981. The next prime is 210112221120047. The reversal of 210112221120021 is 120021122211012.

210112221120021 is a `hidden beast` number, since 210 + 1 + 1 + 22 + 211 + 200 + 21 = 666.

It is not a de Polignac number, because 210112221120021 - 2¹⁰ = 210112221118997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210112221119976 and 210112221120003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210112221120421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50192716 + ... + 54217461.

It is an arithmetic number, because the mean of its divisors is an integer number (13795925639496).

Almost surely, 2^{210112221120021} is an apocalyptic number.

It is an amenable number.

210112221120021 is a deficient number, since it is larger than the sum of its proper divisors (120989994227883).

210112221120021 is a wasteful number, since it uses less digits than its factorization.

210112221120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104430521 (or 104430518 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210112221120021 its reverse (120021122211012), we get a palindrome (330133343331033).

The spelling of 210112221120021 in words is "two hundred ten trillion, one hundred twelve billion, two hundred twenty-one million, one hundred twenty thousand, twenty-one".