11012220201209 has 2 divisors, whose sum is σ = 11012220201210. Its totient is φ = 11012220201208.

The previous prime is 11012220201149. The next prime is 11012220201217. The reversal of 11012220201209 is 90210202221011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10970900695225 + 41319505984 = 3312235^2 + 203272^2 .

It is a cyclic number.

It is not a de Polignac number, because 11012220201209 - 2¹² = 11012220197113 is a prime.

It is not a weakly prime, because it can be changed into another prime (11012220201299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506110100604 + 5506110100605.

It is an arithmetic number, because the mean of its divisors is an integer number (5506110100605).

Almost surely, 2^{11012220201209} is an apocalyptic number.

It is an amenable number.

11012220201209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012220201209 is an equidigital number, since it uses as much as digits as its factorization.

11012220201209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 11012220201209 in words is "eleven trillion, twelve billion, two hundred twenty million, two hundred one thousand, two hundred nine".