1321221300211 has 8 divisors (see below), whose sum is σ = 1451227057920. Its totient is φ = 1197262321992.

The previous prime is 1321221300169. The next prime is 1321221300239. The reversal of 1321221300211 is 1120031221231.

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 1321221300211 - 2¹⁹ = 1321220775923 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321221300011) 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, 1511694415 + ... + 1511695288.

It is an arithmetic number, because the mean of its divisors is an integer number (181403382240).

Almost surely, 2^{1321221300211} is an apocalyptic number.

1321221300211 is a deficient number, since it is larger than the sum of its proper divisors (130005757709).

1321221300211 is a wasteful number, since it uses less digits than its factorization.

1321221300211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023389745.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1321221300211 its reverse (1120031221231), we get a palindrome (2441252521442).

The spelling of 1321221300211 in words is "one trillion, three hundred twenty-one billion, two hundred twenty-one million, three hundred thousand, two hundred eleven".