2125532111 has 4 divisors (see below), whose sum is σ = 2130605400. Its totient is φ = 2120458824.

The previous prime is 2125532107. The next prime is 2125532113. The reversal of 2125532111 is 1112355212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2125532111 - 2² = 2125532107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125532113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2536016 + ... + 2536853.

It is an arithmetic number, because the mean of its divisors is an integer number (532651350).

Almost surely, 2^2125532111 is an apocalyptic number.

2125532111 is a deficient number, since it is larger than the sum of its proper divisors (5073289).

2125532111 is an equidigital number, since it uses as much as digits as its factorization.

2125532111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5073288.

The product of its digits is 600, while the sum is 23.

The square root of 2125532111 is about 46103.4934793449. The cubic root of 2125532111 is about 1285.7480967434.

Adding to 2125532111 its reverse (1112355212), we get a palindrome (3237887323).

The spelling of 2125532111 in words is "two billion, one hundred twenty-five million, five hundred thirty-two thousand, one hundred eleven".