11011220201 has 2 divisors, whose sum is σ = 11011220202. Its totient is φ = 11011220200.

The previous prime is 11011220191. The next prime is 11011220219. The reversal of 11011220201 is 10202211011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8583096025 + 2428124176 = 92645^2 + 49276^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011220201 - 2³⁰ = 9937478377 is a prime.

It is not a weakly prime, because it can be changed into another prime (11011220281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505610100 + 5505610101.

It is an arithmetic number, because the mean of its divisors is an integer number (5505610101).

Almost surely, 2^11011220201 is an apocalyptic number.

It is an amenable number.

11011220201 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011220201 is an equidigital number, since it uses as much as digits as its factorization.

11011220201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11011220201 its reverse (10202211011), we get a palindrome (21213431212).

The spelling of 11011220201 in words is "eleven billion, eleven million, two hundred twenty thousand, two hundred one".