121325521 has 2 divisors, whose sum is σ = 121325522. Its totient is φ = 121325520.

The previous prime is 121325497. The next prime is 121325539. The reversal of 121325521 is 125523121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117483921 + 3841600 = 10839^2 + 1960^2 .

It is a cyclic number.

It is not a de Polignac number, because 121325521 - 2¹¹ = 121323473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121325492 and 121325501.

It is not a weakly prime, because it can be changed into another prime (121329521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60662760 + 60662761.

It is an arithmetic number, because the mean of its divisors is an integer number (60662761).

Almost surely, 2^121325521 is an apocalyptic number.

It is an amenable number.

121325521 is a deficient number, since it is larger than the sum of its proper divisors (1).

121325521 is an equidigital number, since it uses as much as digits as its factorization.

121325521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 600, while the sum is 22.

The square root of 121325521 is about 11014.7864709217. The cubic root of 121325521 is about 495.0518885850.

Adding to 121325521 its reverse (125523121), we get a palindrome (246848642).

The spelling of 121325521 in words is "one hundred twenty-one million, three hundred twenty-five thousand, five hundred twenty-one".