11011210021201 has 4 divisors (see below), whose sum is σ = 11858226176692. Its totient is φ = 10164193865712.

The previous prime is 11011210021171. The next prime is 11011210021211. The reversal of 11011210021201 is 10212001211011.

It is a happy number.

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 844046438400 + 10167163582801 = 918720^2 + 3188599^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011210021201 - 2¹⁵ = 11011209988433 is a prime.

It is a super-2 number, since 2×11011210021201² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 847016155477 = 11011210021201 / (1 + 1 + 0 + 1 + 1 + 2 + 1 + 0 + 0 + 2 + 1 + 2 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11011210021211) 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 3 ways as a sum of consecutive naturals, for example, 423508077726 + ... + 423508077751.

It is an arithmetic number, because the mean of its divisors is an integer number (2964556544173).

Almost surely, 2^{11011210021201} is an apocalyptic number.

It is an amenable number.

11011210021201 is a deficient number, since it is larger than the sum of its proper divisors (847016155491).

11011210021201 is an equidigital number, since it uses as much as digits as its factorization.

11011210021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847016155490.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11011210021201 its reverse (10212001211011), we get a palindrome (21223211232212).

The spelling of 11011210021201 in words is "eleven trillion, eleven billion, two hundred ten million, twenty-one thousand, two hundred one".