11912129 has 2 divisors, whose sum is σ = 11912130. Its totient is φ = 11912128.

The previous prime is 11912123. The next prime is 11912171. The reversal of 11912129 is 92121911.

11912129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9909904 + 2002225 = 3148^2 + 1415^2 .

It is a cyclic number.

It is not a de Polignac number, because 11912129 - 2⁸ = 11911873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11912098 and 11912107.

It is not a weakly prime, because it can be changed into another prime (11912123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5956064 + 5956065.

It is an arithmetic number, because the mean of its divisors is an integer number (5956065).

Almost surely, 2^11912129 is an apocalyptic number.

It is an amenable number.

11912129 is a deficient number, since it is larger than the sum of its proper divisors (1).

11912129 is an equidigital number, since it uses as much as digits as its factorization.

11912129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 26.

The square root of 11912129 is about 3451.3952251227. The cubic root of 11912129 is about 228.3826612426.

The spelling of 11912129 in words is "eleven million, nine hundred twelve thousand, one hundred twenty-nine".