2141210209 has 2 divisors, whose sum is σ = 2141210210. Its totient is φ = 2141210208.

The previous prime is 2141210191. The next prime is 2141210213. The reversal of 2141210209 is 9020121412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2141097984 + 112225 = 46272^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 2141210209 - 2¹⁷ = 2141079137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2141210209.

It is not a weakly prime, because it can be changed into another prime (2141210249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070605104 + 1070605105.

It is an arithmetic number, because the mean of its divisors is an integer number (1070605105).

Almost surely, 2^2141210209 is an apocalyptic number.

It is an amenable number.

2141210209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141210209 is an equidigital number, since it uses as much as digits as its factorization.

2141210209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 2141210209 is about 46273.2126505174. The cubic root of 2141210209 is about 1288.9016167659.

The spelling of 2141210209 in words is "two billion, one hundred forty-one million, two hundred ten thousand, two hundred nine".