133629121 has 2 divisors, whose sum is σ = 133629122. Its totient is φ = 133629120.

The previous prime is 133629107. The next prime is 133629151. The reversal of 133629121 is 121926331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117939600 + 15689521 = 10860^2 + 3961^2 .

It is a cyclic number.

It is not a de Polignac number, because 133629121 - 2¹¹ = 133627073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133629121.

It is not a weakly prime, because it can be changed into another prime (133629151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66814560 + 66814561.

It is an arithmetic number, because the mean of its divisors is an integer number (66814561).

Almost surely, 2^133629121 is an apocalyptic number.

It is an amenable number.

133629121 is a deficient number, since it is larger than the sum of its proper divisors (1).

133629121 is an equidigital number, since it uses as much as digits as its factorization.

133629121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 28.

The square root of 133629121 is about 11559.8062700030. The cubic root of 133629121 is about 511.2504507183.

The spelling of 133629121 in words is "one hundred thirty-three million, six hundred twenty-nine thousand, one hundred twenty-one".