210112020212221 has 4 divisors (see below), whose sum is σ = 214998346263712. Its totient is φ = 205225694160732.

The previous prime is 210112020212197. The next prime is 210112020212239. The reversal of 210112020212221 is 122212020211012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210112020212221 - 2¹¹ = 210112020210173 is a prime.

It is a super-2 number, since 2×210112020212221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210112020212021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2443163025681 + ... + 2443163025766.

It is an arithmetic number, because the mean of its divisors is an integer number (53749586565928).

Almost surely, 2^{210112020212221} is an apocalyptic number.

It is an amenable number.

210112020212221 is a deficient number, since it is larger than the sum of its proper divisors (4886326051491).

210112020212221 is an equidigital number, since it uses as much as digits as its factorization.

210112020212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4886326051490.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 210112020212221 its reverse (122212020211012), we get a palindrome (332324040423233).

The spelling of 210112020212221 in words is "two hundred ten trillion, one hundred twelve billion, twenty million, two hundred twelve thousand, two hundred twenty-one".