2125147111 has 2 divisors, whose sum is σ = 2125147112. Its totient is φ = 2125147110.

The previous prime is 2125147109. The next prime is 2125147139. The reversal of 2125147111 is 1117415212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2125147111 - 2¹ = 2125147109 is a prime.

Together with 2125147109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2125147411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062573555 + 1062573556.

It is an arithmetic number, because the mean of its divisors is an integer number (1062573556).

Almost surely, 2^2125147111 is an apocalyptic number.

2125147111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125147111 is an equidigital number, since it uses as much as digits as its factorization.

2125147111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 560, while the sum is 25.

The square root of 2125147111 is about 46099.3179016783. The cubic root of 2125147111 is about 1285.6704623940.

The spelling of 2125147111 in words is "two billion, one hundred twenty-five million, one hundred forty-seven thousand, one hundred eleven".