11221020100201 has 4 divisors (see below), whose sum is σ = 11221052248900. Its totient is φ = 11220987951504.

The previous prime is 11221020100177. The next prime is 11221020100219. The reversal of 11221020100201 is 10200102012211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1426304718400 + 9794715381801 = 1194280^2 + 3129651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11221020100201 is a prime.

It is a super-2 number, since 2×11221020100201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221020100291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15544986 + ... + 16250803.

It is an arithmetic number, because the mean of its divisors is an integer number (2805263062225).

Almost surely, 2^{11221020100201} is an apocalyptic number.

It is an amenable number.

11221020100201 is a deficient number, since it is larger than the sum of its proper divisors (32148699).

11221020100201 is an equidigital number, since it uses as much as digits as its factorization.

11221020100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32148698.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11221020100201 its reverse (10200102012211), we get a palindrome (21421122112412).

The spelling of 11221020100201 in words is "eleven trillion, two hundred twenty-one billion, twenty million, one hundred thousand, two hundred one".