132399121 has 2 divisors, whose sum is σ = 132399122. Its totient is φ = 132399120.

The previous prime is 132399119. The next prime is 132399131. The reversal of 132399121 is 121993231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99221521 + 33177600 = 9961^2 + 5760^2 .

It is an emirp because it is prime and its reverse (121993231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 132399121 - 2¹ = 132399119 is a prime.

Together with 132399119, it forms a pair of twin primes.

It is equal to p_7506490 and since 132399121 and 7506490 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (132399131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66199560 + 66199561.

It is an arithmetic number, because the mean of its divisors is an integer number (66199561).

Almost surely, 2^132399121 is an apocalyptic number.

It is an amenable number.

132399121 is a deficient number, since it is larger than the sum of its proper divisors (1).

132399121 is an equidigital number, since it uses as much as digits as its factorization.

132399121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 31.

The square root of 132399121 is about 11506.4816951143. The cubic root of 132399121 is about 509.6769978318.

The spelling of 132399121 in words is "one hundred thirty-two million, three hundred ninety-nine thousand, one hundred twenty-one".