2111021113 has 2 divisors, whose sum is σ = 2111021114. Its totient is φ = 2111021112.

The previous prime is 2111021093. The next prime is 2111021131. The reversal of 2111021113 is 3111201112.

It is a happy number.

Together with next prime (2111021131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2102039104 + 8982009 = 45848^2 + 2997^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111021113 - 2²⁵ = 2077466681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2111021093 and 2111021102.

It is not a weakly prime, because it can be changed into another prime (2111021413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055510556 + 1055510557.

It is an arithmetic number, because the mean of its divisors is an integer number (1055510557).

Almost surely, 2^2111021113 is an apocalyptic number.

It is an amenable number.

2111021113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111021113 is an equidigital number, since it uses as much as digits as its factorization.

2111021113 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 13.

The square root of 2111021113 is about 45945.8497908135. The cubic root of 2111021113 is about 1282.8154808070.

Adding to 2111021113 its reverse (3111201112), we get a palindrome (5222222225).

The spelling of 2111021113 in words is "two billion, one hundred eleven million, twenty-one thousand, one hundred thirteen".