111000210012221 has 2 divisors, whose sum is σ = 111000210012222. Its totient is φ = 111000210012220.

The previous prime is 111000210012173. The next prime is 111000210012229. The reversal of 111000210012221 is 122210012000111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77261375124025 + 33738834888196 = 8789845^2 + 5808514^2 .

It is a cyclic number.

It is not a de Polignac number, because 111000210012221 - 2²⁶ = 111000142903357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111000210012196 and 111000210012205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111000210012229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500105006110 + 55500105006111.

It is an arithmetic number, because the mean of its divisors is an integer number (55500105006111).

Almost surely, 2^{111000210012221} is an apocalyptic number.

It is an amenable number.

111000210012221 is a deficient number, since it is larger than the sum of its proper divisors (1).

111000210012221 is an equidigital number, since it uses as much as digits as its factorization.

111000210012221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111000210012221 its reverse (122210012000111), we get a palindrome (233210222012332).

The spelling of 111000210012221 in words is "one hundred eleven trillion, two hundred ten million, twelve thousand, two hundred twenty-one".