1211340003221 has 8 divisors (see below), whose sum is σ = 1211759203584. Its totient is φ = 1210920879600.

The previous prime is 1211340003199. The next prime is 1211340003229. The reversal of 1211340003221 is 1223000431121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211340003221 - 2¹⁴ = 1211339986837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211340003193 and 1211340003202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211340003229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56364740 + ... + 56386226.

It is an arithmetic number, because the mean of its divisors is an integer number (151469900448).

Almost surely, 2^{1211340003221} is an apocalyptic number.

It is an amenable number.

1211340003221 is a deficient number, since it is larger than the sum of its proper divisors (419200363).

1211340003221 is a wasteful number, since it uses less digits than its factorization.

1211340003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38371.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1211340003221 its reverse (1223000431121), we get a palindrome (2434340434342).

The spelling of 1211340003221 in words is "one trillion, two hundred eleven billion, three hundred forty million, three thousand, two hundred twenty-one".