10101112221209 has 2 divisors, whose sum is σ = 10101112221210. Its totient is φ = 10101112221208.

The previous prime is 10101112221139. The next prime is 10101112221223. The reversal of 10101112221209 is 90212221110101.

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., 9037268502025 + 1063843719184 = 3006205^2 + 1031428^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10101112221209 is a prime.

It is not a weakly prime, because it can be changed into another prime (10101112221269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050556110604 + 5050556110605.

It is an arithmetic number, because the mean of its divisors is an integer number (5050556110605).

Almost surely, 2^{10101112221209} is an apocalyptic number.

It is an amenable number.

10101112221209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101112221209 is an equidigital number, since it uses as much as digits as its factorization.

10101112221209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 10101112221209 in words is "ten trillion, one hundred one billion, one hundred twelve million, two hundred twenty-one thousand, two hundred nine".