111221101139 has 2 divisors, whose sum is σ = 111221101140. Its totient is φ = 111221101138.

The previous prime is 111221101133. The next prime is 111221101141. The reversal of 111221101139 is 931101122111.

It is a strong prime.

It is an emirp because it is prime and its reverse (931101122111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111221101139 - 2²⁸ = 110952665683 is a prime.

Together with 111221101141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111221101133) 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, 55610550569 + 55610550570.

It is an arithmetic number, because the mean of its divisors is an integer number (55610550570).

Almost surely, 2^111221101139 is an apocalyptic number.

111221101139 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221101139 is an equidigital number, since it uses as much as digits as its factorization.

111221101139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 23.

The spelling of 111221101139 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred one thousand, one hundred thirty-nine".