10221201211009 has 2 divisors, whose sum is σ = 10221201211010. Its totient is φ = 10221201211008.

The previous prime is 10221201210947. The next prime is 10221201211021. The reversal of 10221201211009 is 90011210212201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10218507289600 + 2693921409 = 3196640^2 + 51903^2 .

It is an emirp because it is prime and its reverse (90011210212201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10221201211009 - 2¹⁹ = 10221200686721 is a prime.

It is not a weakly prime, because it can be changed into another prime (10221201211409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110600605504 + 5110600605505.

It is an arithmetic number, because the mean of its divisors is an integer number (5110600605505).

Almost surely, 2^{10221201211009} is an apocalyptic number.

It is an amenable number.

10221201211009 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221201211009 is an equidigital number, since it uses as much as digits as its factorization.

10221201211009 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 22.

The spelling of 10221201211009 in words is "ten trillion, two hundred twenty-one billion, two hundred one million, two hundred eleven thousand, nine".