2521061111 has 2 divisors, whose sum is σ = 2521061112. Its totient is φ = 2521061110.

The previous prime is 2521061051. The next prime is 2521061117. The reversal of 2521061111 is 1111601252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2521061111 - 2⁶ = 2521061047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2521061117) 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, 1260530555 + 1260530556.

It is an arithmetic number, because the mean of its divisors is an integer number (1260530556).

Almost surely, 2^2521061111 is an apocalyptic number.

2521061111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521061111 is an equidigital number, since it uses as much as digits as its factorization.

2521061111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 2521061111 is about 50210.1693982404. The cubic root of 2521061111 is about 1361.0093989539.

Adding to 2521061111 its reverse (1111601252), we get a palindrome (3632662363).

The spelling of 2521061111 in words is "two billion, five hundred twenty-one million, sixty-one thousand, one hundred eleven".