201322129 has 2 divisors, whose sum is σ = 201322130. Its totient is φ = 201322128.

The previous prime is 201322117. The next prime is 201322139. The reversal of 201322129 is 921223102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157126225 + 44195904 = 12535^2 + 6648^2 .

It is a cyclic number.

It is not a de Polignac number, because 201322129 - 2⁵ = 201322097 is a prime.

It is not a weakly prime, because it can be changed into another prime (201322139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100661064 + 100661065.

It is an arithmetic number, because the mean of its divisors is an integer number (100661065).

Almost surely, 2^201322129 is an apocalyptic number.

It is an amenable number.

201322129 is a deficient number, since it is larger than the sum of its proper divisors (1).

201322129 is an equidigital number, since it uses as much as digits as its factorization.

201322129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 201322129 is about 14188.8029445757. The cubic root of 201322129 is about 586.0893613213.

It can be divided in two parts, 2013 and 22129, that added together give a palindrome (24142).

The spelling of 201322129 in words is "two hundred one million, three hundred twenty-two thousand, one hundred twenty-nine".