111099942991237 has 2 divisors, whose sum is σ = 111099942991238. Its totient is φ = 111099942991236.

The previous prime is 111099942991127. The next prime is 111099942991253. The reversal of 111099942991237 is 732199249990111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110162636313921 + 937306677316 = 10495839^2 + 968146^2 .

It is a cyclic number.

It is not a de Polignac number, because 111099942991237 - 2⁴³ = 102303849969029 is a prime.

It is a super-2 number, since 2×111099942991237² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111099942901237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55549971495618 + 55549971495619.

It is an arithmetic number, because the mean of its divisors is an integer number (55549971495619).

Almost surely, 2^{111099942991237} is an apocalyptic number.

It is an amenable number.

111099942991237 is a deficient number, since it is larger than the sum of its proper divisors (1).

111099942991237 is an equidigital number, since it uses as much as digits as its factorization.

111099942991237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19840464, while the sum is 67.

The spelling of 111099942991237 in words is "one hundred eleven trillion, ninety-nine billion, nine hundred forty-two million, nine hundred ninety-one thousand, two hundred thirty-seven".