2123525111 has 4 divisors (see below), whose sum is σ = 2126224152. Its totient is φ = 2120826072.

The previous prime is 2123525081. The next prime is 2123525113. The reversal of 2123525111 is 1115253212.

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 2123525111 - 2¹⁴ = 2123508727 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 (2123525113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1348340 + ... + 1349913.

It is an arithmetic number, because the mean of its divisors is an integer number (531556038).

Almost surely, 2^2123525111 is an apocalyptic number.

2123525111 is a deficient number, since it is larger than the sum of its proper divisors (2699041).

2123525111 is an equidigital number, since it uses as much as digits as its factorization.

2123525111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699040.

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

The square root of 2123525111 is about 46081.7220923871. The cubic root of 2123525111 is about 1285.3432868857.

Adding to 2123525111 its reverse (1115253212), we get a palindrome (3238778323).

The spelling of 2123525111 in words is "two billion, one hundred twenty-three million, five hundred twenty-five thousand, one hundred eleven".