210112112220121 has 4 divisors (see below), whose sum is σ = 213673334461200. Its totient is φ = 206550889979044.

The previous prime is 210112112220119. The next prime is 210112112220151. The reversal of 210112112220121 is 121022211211012.

It is a happy number.

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 210112112220121 - 2¹ = 210112112220119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210112112220151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1780611120451 + ... + 1780611120568.

It is an arithmetic number, because the mean of its divisors is an integer number (53418333615300).

Almost surely, 2^{210112112220121} is an apocalyptic number.

It is an amenable number.

210112112220121 is a deficient number, since it is larger than the sum of its proper divisors (3561222241079).

210112112220121 is an equidigital number, since it uses as much as digits as its factorization.

210112112220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3561222241078.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 210112112220121 its reverse (121022211211012), we get a palindrome (331134323431133).

The spelling of 210112112220121 in words is "two hundred ten trillion, one hundred twelve billion, one hundred twelve million, two hundred twenty thousand, one hundred twenty-one".