1152121 has 2 divisors, whose sum is σ = 1152122. Its totient is φ = 1152120.

The previous prime is 1152119. The next prime is 1152149. The reversal of 1152121 is 1212511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 881721 + 270400 = 939^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 1152121 - 2¹ = 1152119 is a prime.

Together with 1152119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1152161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576060 + 576061.

It is an arithmetic number, because the mean of its divisors is an integer number (576061).

2^1152121 is an apocalyptic number.

It is an amenable number.

1152121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1152121 is an equidigital number, since it uses as much as digits as its factorization.

1152121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20, while the sum is 13.

The square root of 1152121 is about 1073.3689952668. The cubic root of 1152121 is about 104.8333258911.

Adding to 1152121 its reverse (1212511), we get a palindrome (2364632).

The spelling of 1152121 in words is "one million, one hundred fifty-two thousand, one hundred twenty-one".