1321112543211 has 16 divisors (see below), whose sum is σ = 1962655603200. Its totient is φ = 878288369544.

The previous prime is 1321112543183. The next prime is 1321112543221. The reversal of 1321112543211 is 1123452111231.

1321112543211 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 112 + 543 + 2 + 1 + 1 = 666.

It is not a de Polignac number, because 1321112543211 - 2³¹ = 1318965059563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1321112543221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68138071 + ... + 68157456.

It is an arithmetic number, because the mean of its divisors is an integer number (122665975200).

Almost surely, 2^{1321112543211} is an apocalyptic number.

1321112543211 is a deficient number, since it is larger than the sum of its proper divisors (641543059989).

1321112543211 is a wasteful number, since it uses less digits than its factorization.

1321112543211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136295895 (or 136295889 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

Adding to 1321112543211 its reverse (1123452111231), we get a palindrome (2444564654442).

The spelling of 1321112543211 in words is "one trillion, three hundred twenty-one billion, one hundred twelve million, five hundred forty-three thousand, two hundred eleven".