1211321441311 has 8 divisors (see below), whose sum is σ = 1304728113920. Its totient is φ = 1120880059992.

The previous prime is 1211321441287. The next prime is 1211321441353. The reversal of 1211321441311 is 1131441231121.

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

It is not a de Polignac number, because 1211321441311 - 2¹⁵ = 1211321408543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211321441371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 741321975 + ... + 741323608.

It is an arithmetic number, because the mean of its divisors is an integer number (163091014240).

Almost surely, 2^{1211321441311} is an apocalyptic number.

1211321441311 is a deficient number, since it is larger than the sum of its proper divisors (93406672609).

1211321441311 is a wasteful number, since it uses less digits than its factorization.

1211321441311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482645645.

The product of its digits is 576, while the sum is 25.

Adding to 1211321441311 its reverse (1131441231121), we get a palindrome (2342762672432).

The spelling of 1211321441311 in words is "one trillion, two hundred eleven billion, three hundred twenty-one million, four hundred forty-one thousand, three hundred eleven".