20002212121169 has 2 divisors, whose sum is σ = 20002212121170. Its totient is φ = 20002212121168.

The previous prime is 20002212121081. The next prime is 20002212121211. The reversal of 20002212121169 is 96112121220002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18168863625025 + 1833348496144 = 4262495^2 + 1354012^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20002212121169 is a prime.

It is a super-2 number, since 2×20002212121169² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20002212921169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001106060584 + 10001106060585.

It is an arithmetic number, because the mean of its divisors is an integer number (10001106060585).

Almost surely, 2^{20002212121169} is an apocalyptic number.

It is an amenable number.

20002212121169 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002212121169 is an equidigital number, since it uses as much as digits as its factorization.

20002212121169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 20002212121169 in words is "twenty trillion, two billion, two hundred twelve million, one hundred twenty-one thousand, one hundred sixty-nine".