111323220061 has 2 divisors, whose sum is σ = 111323220062. Its totient is φ = 111323220060.

The previous prime is 111323219993. The next prime is 111323220091. The reversal of 111323220061 is 160022323111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108105494436 + 3217725625 = 328794^2 + 56725^2 .

It is a cyclic number.

It is not a de Polignac number, because 111323220061 - 2⁷ = 111323219933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111323220091) 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, 55661610030 + 55661610031.

It is an arithmetic number, because the mean of its divisors is an integer number (55661610031).

Almost surely, 2^111323220061 is an apocalyptic number.

It is an amenable number.

111323220061 is a deficient number, since it is larger than the sum of its proper divisors (1).

111323220061 is an equidigital number, since it uses as much as digits as its factorization.

111323220061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 111323220061 its reverse (160022323111), we get a palindrome (271345543172).

The spelling of 111323220061 in words is "one hundred eleven billion, three hundred twenty-three million, two hundred twenty thousand, sixty-one".