210112120212221 has 2 divisors, whose sum is σ = 210112120212222. Its totient is φ = 210112120212220.

The previous prime is 210112120212209. The next prime is 210112120212251. The reversal of 210112120212221 is 122212021211012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202091414764996 + 8020705447225 = 14215886^2 + 2832085^2 .

It is a cyclic number.

It is not a de Polignac number, because 210112120212221 - 2⁶ = 210112120212157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210112120212193 and 210112120212202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210112120212251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105056060106110 + 105056060106111.

It is an arithmetic number, because the mean of its divisors is an integer number (105056060106111).

Almost surely, 2^{210112120212221} is an apocalyptic number.

It is an amenable number.

210112120212221 is a deficient number, since it is larger than the sum of its proper divisors (1).

210112120212221 is an equidigital number, since it uses as much as digits as its factorization.

210112120212221 is an evil number, because the sum of its binary digits is even.

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

Adding to 210112120212221 its reverse (122212021211012), we get a palindrome (332324141423233).

The spelling of 210112120212221 in words is "two hundred ten trillion, one hundred twelve billion, one hundred twenty million, two hundred twelve thousand, two hundred twenty-one".