11211330401 has 4 divisors (see below), whose sum is σ = 11221055172. Its totient is φ = 11201605632.

The previous prime is 11211330397. The next prime is 11211330407. The reversal of 11211330401 is 10403311211.

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 10378719376 + 832611025 = 101876^2 + 28855^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211330401 - 2² = 11211330397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11211330401.

It is not an unprimeable number, because it can be changed into a prime (11211330407) 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, 4860656 + ... + 4862961.

It is an arithmetic number, because the mean of its divisors is an integer number (2805263793).

Almost surely, 2^11211330401 is an apocalyptic number.

It is an amenable number.

11211330401 is a deficient number, since it is larger than the sum of its proper divisors (9724771).

11211330401 is an equidigital number, since it uses as much as digits as its factorization.

11211330401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9724770.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11211330401 its reverse (10403311211), we get a palindrome (21614641612).

The spelling of 11211330401 in words is "eleven billion, two hundred eleven million, three hundred thirty thousand, four hundred one".