11021120021201 has 16 divisors (see below), whose sum is σ = 11193634342800. Its totient is φ = 10849900658688.

The previous prime is 11021120021183. The next prime is 11021120021237. The reversal of 11021120021201 is 10212002112011.

It can be written as a sum of positive squares in 8 ways, for example, as 4132279905601 + 6888840115600 = 2032801^2 + 2624660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021120021201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021120027201) 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 in 15 ways as a sum of consecutive naturals, for example, 22562765 + ... + 23046053.

It is an arithmetic number, because the mean of its divisors is an integer number (699602146425).

Almost surely, 2^{11021120021201} is an apocalyptic number.

It is an amenable number.

11021120021201 is a deficient number, since it is larger than the sum of its proper divisors (172514321599).

11021120021201 is a wasteful number, since it uses less digits than its factorization.

11021120021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484628.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11021120021201 its reverse (10212002112011), we get a palindrome (21233122133212).

The spelling of 11021120021201 in words is "eleven trillion, twenty-one billion, one hundred twenty million, twenty-one thousand, two hundred one".