20002222122209 has 2 divisors, whose sum is σ = 20002222122210. Its totient is φ = 20002222122208.

The previous prime is 20002222122187. The next prime is 20002222122229. The reversal of 20002222122209 is 90222122220002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19455994701025 + 546227421184 = 4410895^2 + 739072^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002222122209 - 2¹² = 20002222118113 is a prime.

It is a super-2 number, since 2×20002222122209² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20002222122229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001111061104 + 10001111061105.

It is an arithmetic number, because the mean of its divisors is an integer number (10001111061105).

Almost surely, 2^{20002222122209} is an apocalyptic number.

It is an amenable number.

20002222122209 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002222122209 is an equidigital number, since it uses as much as digits as its factorization.

20002222122209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The spelling of 20002222122209 in words is "twenty trillion, two billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred nine".