200110111112221 has 2 divisors, whose sum is σ = 200110111112222. Its totient is φ = 200110111112220.

The previous prime is 200110111112203. The next prime is 200110111112231. The reversal of 200110111112221 is 122211111011002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195187863031225 + 4922248080996 = 13970965^2 + 2218614^2 .

It is a cyclic number.

It is not a de Polignac number, because 200110111112221 - 2²⁹ = 200109574241309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200110111112195 and 200110111112204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200110111112231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100055055556110 + 100055055556111.

It is an arithmetic number, because the mean of its divisors is an integer number (100055055556111).

Almost surely, 2^{200110111112221} is an apocalyptic number.

It is an amenable number.

200110111112221 is a deficient number, since it is larger than the sum of its proper divisors (1).

200110111112221 is an equidigital number, since it uses as much as digits as its factorization.

200110111112221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 200110111112221 its reverse (122211111011002), we get a palindrome (322321222123223).

The spelling of 200110111112221 in words is "two hundred trillion, one hundred ten billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty-one".