111221003111 has 2 divisors, whose sum is σ = 111221003112. Its totient is φ = 111221003110.

The previous prime is 111221003107. The next prime is 111221003143. The reversal of 111221003111 is 111300122111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111221003111 - 2² = 111221003107 is a prime.

It is a super-2 number, since 2×111221003111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111221005111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610501555 + 55610501556.

It is an arithmetic number, because the mean of its divisors is an integer number (55610501556).

Almost surely, 2^111221003111 is an apocalyptic number.

111221003111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221003111 is an equidigital number, since it uses as much as digits as its factorization.

111221003111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 111221003111 its reverse (111300122111), we get a palindrome (222521125222).

The spelling of 111221003111 in words is "one hundred eleven billion, two hundred twenty-one million, three thousand, one hundred eleven".