111000108902861 has 2 divisors, whose sum is σ = 111000108902862. Its totient is φ = 111000108902860.

The previous prime is 111000108902831. The next prime is 111000108902863. The reversal of 111000108902861 is 168209801000111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92233070478025 + 18767038424836 = 9603805^2 + 4332094^2 .

It is a cyclic number.

It is not a de Polignac number, because 111000108902861 - 2⁶ = 111000108902797 is a prime.

Together with 111000108902863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111000108902863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500054451430 + 55500054451431.

It is an arithmetic number, because the mean of its divisors is an integer number (55500054451431).

Almost surely, 2^{111000108902861} is an apocalyptic number.

It is an amenable number.

111000108902861 is a deficient number, since it is larger than the sum of its proper divisors (1).

111000108902861 is an equidigital number, since it uses as much as digits as its factorization.

111000108902861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 38.

Adding to 111000108902861 its reverse (168209801000111), we get a palindrome (279209909902972).

The spelling of 111000108902861 in words is "one hundred eleven trillion, one hundred eight million, nine hundred two thousand, eight hundred sixty-one".