2222000123209 has 2 divisors, whose sum is σ = 2222000123210. Its totient is φ = 2222000123208.

The previous prime is 2222000123177. The next prime is 2222000123221. The reversal of 2222000123209 is 9023210002222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2221897303609 + 102819600 = 1490603^2 + 10140^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222000123209 - 2⁵ = 2222000123177 is a prime.

It is a super-2 number, since 2×2222000123209² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2222000120209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111000061604 + 1111000061605.

It is an arithmetic number, because the mean of its divisors is an integer number (1111000061605).

Almost surely, 2^{2222000123209} is an apocalyptic number.

It is an amenable number.

2222000123209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222000123209 is an equidigital number, since it uses as much as digits as its factorization.

2222000123209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 2222000123209 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-three thousand, two hundred nine".