111200122087 has 2 divisors, whose sum is σ = 111200122088. Its totient is φ = 111200122086.

The previous prime is 111200122073. The next prime is 111200122127. The reversal of 111200122087 is 780221002111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111200122087 - 2¹⁹ = 111199597799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111200122037) 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, 55600061043 + 55600061044.

It is an arithmetic number, because the mean of its divisors is an integer number (55600061044).

Almost surely, 2^111200122087 is an apocalyptic number.

111200122087 is a deficient number, since it is larger than the sum of its proper divisors (1).

111200122087 is an equidigital number, since it uses as much as digits as its factorization.

111200122087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 111200122087 its reverse (780221002111), we get a palindrome (891421124198).

The spelling of 111200122087 in words is "one hundred eleven billion, two hundred million, one hundred twenty-two thousand, eighty-seven".