2200121129 has 2 divisors, whose sum is σ = 2200121130. Its totient is φ = 2200121128.

The previous prime is 2200121111. The next prime is 2200121149. The reversal of 2200121129 is 9211210022.

It is a happy number.

It is an a-pointer prime, because the next prime (2200121149) can be obtained adding 2200121129 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2193985600 + 6135529 = 46840^2 + 2477^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2200121129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2200121129.

It is not a weakly prime, because it can be changed into another prime (2200121149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100060564 + 1100060565.

It is an arithmetic number, because the mean of its divisors is an integer number (1100060565).

Almost surely, 2^2200121129 is an apocalyptic number.

It is an amenable number.

2200121129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2200121129 is an equidigital number, since it uses as much as digits as its factorization.

2200121129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 2200121129 is about 46905.4488199399. The cubic root of 2200121129 is about 1300.6153160105.

The spelling of 2200121129 in words is "two billion, two hundred million, one hundred twenty-one thousand, one hundred twenty-nine".