111211020183 has 4 divisors (see below), whose sum is σ = 148281360248. Its totient is φ = 74140680120.

The previous prime is 111211020161. The next prime is 111211020197. The reversal of 111211020183 is 381020112111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 381020112111 = 3 ⋅127006704037.

It is not a de Polignac number, because 111211020183 - 2¹⁸ = 111210758039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211020103) 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 in 3 ways as a sum of consecutive naturals, for example, 18535170028 + ... + 18535170033.

It is an arithmetic number, because the mean of its divisors is an integer number (37070340062).

Almost surely, 2^111211020183 is an apocalyptic number.

111211020183 is a deficient number, since it is larger than the sum of its proper divisors (37070340065).

111211020183 is an equidigital number, since it uses as much as digits as its factorization.

111211020183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37070340064.

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 111211020183 its reverse (381020112111), we get a palindrome (492231132294).

The spelling of 111211020183 in words is "one hundred eleven billion, two hundred eleven million, twenty thousand, one hundred eighty-three".