11301021011221 has 4 divisors (see below), whose sum is σ = 11326190323500. Its totient is φ = 11275851698944.

The previous prime is 11301021011183. The next prime is 11301021011243. The reversal of 11301021011221 is 12211012010311.

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 7487397888721 + 3813623122500 = 2736311^2 + 1952850^2 .

It is a cyclic number.

It is not a de Polignac number, because 11301021011221 - 2²¹ = 11301018914069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11301021011195 and 11301021011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11301021011321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12584655466 + ... + 12584656363.

It is an arithmetic number, because the mean of its divisors is an integer number (2831547580875).

Almost surely, 2^{11301021011221} is an apocalyptic number.

It is an amenable number.

11301021011221 is a deficient number, since it is larger than the sum of its proper divisors (25169312279).

11301021011221 is an equidigital number, since it uses as much as digits as its factorization.

11301021011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25169312278.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 11301021011221 its reverse (12211012010311), we get a palindrome (23512033021532).

The spelling of 11301021011221 in words is "eleven trillion, three hundred one billion, twenty-one million, eleven thousand, two hundred twenty-one".