1112021111 has 2 divisors, whose sum is σ = 1112021112. Its totient is φ = 1112021110.

The previous prime is 1112021093. The next prime is 1112021123. The reversal of 1112021111 is 1111202111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1112021111 - 2⁶ = 1112021047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1112021092 and 1112021101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112021171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556010555 + 556010556.

It is an arithmetic number, because the mean of its divisors is an integer number (556010556).

Almost surely, 2^1112021111 is an apocalyptic number.

1112021111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112021111 is an equidigital number, since it uses as much as digits as its factorization.

1112021111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 11.

The square root of 1112021111 is about 33346.9805379737. The cubic root of 1112021111 is about 1036.0268496169.

Adding to 1112021111 its reverse (1111202111), we get a palindrome (2223223222).

The spelling of 1112021111 in words is "one billion, one hundred twelve million, twenty-one thousand, one hundred eleven".