111331300102261 has 2 divisors, whose sum is σ = 111331300102262. Its totient is φ = 111331300102260.

The previous prime is 111331300102249. The next prime is 111331300102313. The reversal of 111331300102261 is 162201003133111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94452760379761 + 16878539722500 = 9718681^2 + 4108350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111331300102261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111331300102241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55665650051130 + 55665650051131.

It is an arithmetic number, because the mean of its divisors is an integer number (55665650051131).

Almost surely, 2^{111331300102261} is an apocalyptic number.

It is an amenable number.

111331300102261 is a deficient number, since it is larger than the sum of its proper divisors (1).

111331300102261 is an equidigital number, since it uses as much as digits as its factorization.

111331300102261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 111331300102261 its reverse (162201003133111), we get a palindrome (273532303235372).

The spelling of 111331300102261 in words is "one hundred eleven trillion, three hundred thirty-one billion, three hundred million, one hundred two thousand, two hundred sixty-one".