11212002003221 has 4 divisors (see below), whose sum is σ = 11220978787500. Its totient is φ = 11203025218944.

The previous prime is 11212002003211. The next prime is 11212002003233. The reversal of 11212002003221 is 12230020021211.

11212002003221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2244887907025 + 8967114096196 = 1498295^2 + 2994514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11212002003221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11212002003221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212002003211) 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, 4488390266 + ... + 4488392763.

It is an arithmetic number, because the mean of its divisors is an integer number (2805244696875).

Almost surely, 2^{11212002003221} is an apocalyptic number.

It is an amenable number.

11212002003221 is a deficient number, since it is larger than the sum of its proper divisors (8976784279).

11212002003221 is an equidigital number, since it uses as much as digits as its factorization.

11212002003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8976784278.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11212002003221 its reverse (12230020021211), we get a palindrome (23442022024432).

The spelling of 11212002003221 in words is "eleven trillion, two hundred twelve billion, two million, three thousand, two hundred twenty-one".