1200100012169 has 2 divisors, whose sum is σ = 1200100012170. Its totient is φ = 1200100012168.

The previous prime is 1200100012109. The next prime is 1200100012219. The reversal of 1200100012169 is 9612100010021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 709696729225 + 490403282944 = 842435^2 + 700288^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200100012169 - 2²⁴ = 1200083234953 is a prime.

It is a super-2 number, since 2×1200100012169² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1200100012109) 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, 600050006084 + 600050006085.

It is an arithmetic number, because the mean of its divisors is an integer number (600050006085).

Almost surely, 2^{1200100012169} is an apocalyptic number.

It is an amenable number.

1200100012169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200100012169 is an equidigital number, since it uses as much as digits as its factorization.

1200100012169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 1200100012169 in words is "one trillion, two hundred billion, one hundred million, twelve thousand, one hundred sixty-nine".