2221200209689 has 2 divisors, whose sum is σ = 2221200209690. Its totient is φ = 2221200209688.

The previous prime is 2221200209681. The next prime is 2221200209731. The reversal of 2221200209689 is 9869020021222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1241876216025 + 979323993664 = 1114395^2 + 989608^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221200209689 - 2³ = 2221200209681 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221200209681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110600104844 + 1110600104845.

It is an arithmetic number, because the mean of its divisors is an integer number (1110600104845).

Almost surely, 2^{2221200209689} is an apocalyptic number.

It is an amenable number.

2221200209689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221200209689 is an equidigital number, since it uses as much as digits as its factorization.

2221200209689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 2221200209689 in words is "two trillion, two hundred twenty-one billion, two hundred million, two hundred nine thousand, six hundred eighty-nine".