2111341021 has 2 divisors, whose sum is σ = 2111341022. Its totient is φ = 2111341020.

The previous prime is 2111340997. The next prime is 2111341079. The reversal of 2111341021 is 1201431112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1972336921 + 139004100 = 44411^2 + 11790^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111341021 - 2¹¹ = 2111338973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2111340986 and 2111341004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111341121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055670510 + 1055670511.

It is an arithmetic number, because the mean of its divisors is an integer number (1055670511).

Almost surely, 2^2111341021 is an apocalyptic number.

It is an amenable number.

2111341021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111341021 is an equidigital number, since it uses as much as digits as its factorization.

2111341021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 2111341021 is about 45949.3310179811. The cubic root of 2111341021 is about 1282.8802776019.

Adding to 2111341021 its reverse (1201431112), we get a palindrome (3312772133).

Subtracting from 2111341021 its reverse (1201431112), we obtain a palindrome (909909909).

The spelling of 2111341021 in words is "two billion, one hundred eleven million, three hundred forty-one thousand, twenty-one".