221112210061 has 2 divisors, whose sum is σ = 221112210062. Its totient is φ = 221112210060.

The previous prime is 221112210019. The next prime is 221112210107. The reversal of 221112210061 is 160012211122.

221112210061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119625365161 + 101486844900 = 345869^2 + 318570^2 .

It is a cyclic number.

It is not a de Polignac number, because 221112210061 - 2⁷ = 221112209933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221112210461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110556105030 + 110556105031.

It is an arithmetic number, because the mean of its divisors is an integer number (110556105031).

Almost surely, 2^221112210061 is an apocalyptic number.

It is an amenable number.

221112210061 is a deficient number, since it is larger than the sum of its proper divisors (1).

221112210061 is an equidigital number, since it uses as much as digits as its factorization.

221112210061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 221112210061 its reverse (160012211122), we get a palindrome (381124421183).

The spelling of 221112210061 in words is "two hundred twenty-one billion, one hundred twelve million, two hundred ten thousand, sixty-one".