100111112001209 has 2 divisors, whose sum is σ = 100111112001210. Its totient is φ = 100111112001208.

The previous prime is 100111112001193. The next prime is 100111112001253. The reversal of 100111112001209 is 902100211111001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75430614606400 + 24680497394809 = 8685080^2 + 4967947^2 .

It is a cyclic number.

It is not a de Polignac number, because 100111112001209 - 2⁴ = 100111112001193 is a prime.

It is a super-2 number, since 2×100111112001209² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100111112001269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50055556000604 + 50055556000605.

It is an arithmetic number, because the mean of its divisors is an integer number (50055556000605).

Almost surely, 2^{100111112001209} is an apocalyptic number.

It is an amenable number.

100111112001209 is a deficient number, since it is larger than the sum of its proper divisors (1).

100111112001209 is an equidigital number, since it uses as much as digits as its factorization.

100111112001209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 100111112001209 in words is "one hundred trillion, one hundred eleven billion, one hundred twelve million, one thousand, two hundred nine".