111222010061 has 2 divisors, whose sum is σ = 111222010062. Its totient is φ = 111222010060.

The previous prime is 111222010033. The next prime is 111222010063. The reversal of 111222010061 is 160010222111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100593637225 + 10628372836 = 317165^2 + 103094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111222010061 is a prime.

Together with 111222010063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111222010063) 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, 55611005030 + 55611005031.

It is an arithmetic number, because the mean of its divisors is an integer number (55611005031).

Almost surely, 2^111222010061 is an apocalyptic number.

It is an amenable number.

111222010061 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222010061 is an equidigital number, since it uses as much as digits as its factorization.

111222010061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111222010061 its reverse (160010222111), we get a palindrome (271232232172).

The spelling of 111222010061 in words is "one hundred eleven billion, two hundred twenty-two million, ten thousand, sixty-one".