2689200221 has 2 divisors, whose sum is σ = 2689200222. Its totient is φ = 2689200220.

The previous prime is 2689200203. The next prime is 2689200257. The reversal of 2689200221 is 1220029862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1639116196 + 1050084025 = 40486^2 + 32405^2 .

It is a cyclic number.

It is not a de Polignac number, because 2689200221 - 2¹⁰ = 2689199197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2689200271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344600110 + 1344600111.

It is an arithmetic number, because the mean of its divisors is an integer number (1344600111).

Almost surely, 2^2689200221 is an apocalyptic number.

It is an amenable number.

2689200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2689200221 is an equidigital number, since it uses as much as digits as its factorization.

2689200221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 2689200221 is about 51857.4991780360. The cubic root of 2689200221 is about 1390.6175716144.

The spelling of 2689200221 in words is "two billion, six hundred eighty-nine million, two hundred thousand, two hundred twenty-one".