121124525 has 18 divisors (see below), whose sum is σ = 158527242. Its totient is φ = 91792800.

The previous prime is 121124519. The next prime is 121124527. The reversal of 121124525 is 525421121.

It can be written as a sum of positive squares in 3 ways, for example, as 30151081 + 90973444 = 5491^2 + 9538^2 .

It is not a de Polignac number, because 121124525 - 2¹² = 121120429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121124525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121124527) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2315 + ... + 15735.

It is an arithmetic number, because the mean of its divisors is an integer number (8807069).

Almost surely, 2^121124525 is an apocalyptic number.

It is an amenable number.

121124525 is a deficient number, since it is larger than the sum of its proper divisors (37402717).

121124525 is a wasteful number, since it uses less digits than its factorization.

121124525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13469 (or 13445 counting only the distinct ones).

The product of its digits is 800, while the sum is 23.

The square root of 121124525 is about 11005.6587717410. The cubic root of 121124525 is about 494.7783587532.

Adding to 121124525 its reverse (525421121), we get a palindrome (646545646).

The spelling of 121124525 in words is "one hundred twenty-one million, one hundred twenty-four thousand, five hundred twenty-five".