11102121201209 has 2 divisors, whose sum is σ = 11102121201210. Its totient is φ = 11102121201208.

The previous prime is 11102121201121. The next prime is 11102121201299. The reversal of 11102121201209 is 90210212120111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9029664403600 + 2072456797609 = 3004940^2 + 1439603^2 .

It is a cyclic number.

It is not a de Polignac number, because 11102121201209 - 2⁸ = 11102121200953 is a prime.

It is not a weakly prime, because it can be changed into another prime (11102121201299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5551060600604 + 5551060600605.

It is an arithmetic number, because the mean of its divisors is an integer number (5551060600605).

Almost surely, 2^{11102121201209} is an apocalyptic number.

It is an amenable number.

11102121201209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11102121201209 is an equidigital number, since it uses as much as digits as its factorization.

11102121201209 is an evil number, because the sum of its binary digits is even.

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

The spelling of 11102121201209 in words is "eleven trillion, one hundred two billion, one hundred twenty-one million, two hundred one thousand, two hundred nine".