2111230111 has 2 divisors, whose sum is σ = 2111230112. Its totient is φ = 2111230110.

The previous prime is 2111230067. The next prime is 2111230127. The reversal of 2111230111 is 1110321112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2111230111 - 2⁹ = 2111229599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2111230091 and 2111230100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111230141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055615055 + 1055615056.

It is an arithmetic number, because the mean of its divisors is an integer number (1055615056).

Almost surely, 2^2111230111 is an apocalyptic number.

2111230111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111230111 is an equidigital number, since it uses as much as digits as its factorization.

2111230111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 2111230111 is about 45948.1241292830. The cubic root of 2111230111 is about 1282.8578137205.

Adding to 2111230111 its reverse (1110321112), we get a palindrome (3221551223).

The spelling of 2111230111 in words is "two billion, one hundred eleven million, two hundred thirty thousand, one hundred eleven".