11012221001801 has 2 divisors, whose sum is σ = 11012221001802. Its totient is φ = 11012221001800.

The previous prime is 11012221001773. The next prime is 11012221001827. The reversal of 11012221001801 is 10810012221011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8318027041801 + 2694193960000 = 2884099^2 + 1641400^2 .

It is a cyclic number.

It is not a de Polignac number, because 11012221001801 - 2⁶ = 11012221001737 is a prime.

It is a super-2 number, since 2×11012221001801² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11012221001891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506110500900 + 5506110500901.

It is an arithmetic number, because the mean of its divisors is an integer number (5506110500901).

Almost surely, 2^{11012221001801} is an apocalyptic number.

It is an amenable number.

11012221001801 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012221001801 is an equidigital number, since it uses as much as digits as its factorization.

11012221001801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 11012221001801 its reverse (10810012221011), we get a palindrome (21822233222812).

The spelling of 11012221001801 in words is "eleven trillion, twelve billion, two hundred twenty-one million, one thousand, eight hundred one".