111112030261 has 2 divisors, whose sum is σ = 111112030262. Its totient is φ = 111112030260.

The previous prime is 111112030241. The next prime is 111112030307. The reversal of 111112030261 is 162030211111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111092889636 + 19140625 = 333306^2 + 4375^2 .

It is a cyclic number.

It is not a de Polignac number, because 111112030261 - 2¹¹ = 111112028213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111112030231) 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, 55556015130 + 55556015131.

It is an arithmetic number, because the mean of its divisors is an integer number (55556015131).

Almost surely, 2^111112030261 is an apocalyptic number.

It is an amenable number.

111112030261 is a deficient number, since it is larger than the sum of its proper divisors (1).

111112030261 is an equidigital number, since it uses as much as digits as its factorization.

111112030261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 111112030261 its reverse (162030211111), we get a palindrome (273142241372).

The spelling of 111112030261 in words is "one hundred eleven billion, one hundred twelve million, thirty thousand, two hundred sixty-one".