1213322312311 has 16 divisors (see below), whose sum is σ = 1278320630400. Its totient is φ = 1148438456928.

The previous prime is 1213322312303. The next prime is 1213322312327. The reversal of 1213322312311 is 1132132233121.

It is not a de Polignac number, because 1213322312311 - 2³ = 1213322312303 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 (1213322312611) 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, 123967960 + ... + 123977746.

It is an arithmetic number, because the mean of its divisors is an integer number (79895039400).

Almost surely, 2^{1213322312311} is an apocalyptic number.

1213322312311 is a deficient number, since it is larger than the sum of its proper divisors (64998318089).

1213322312311 is a wasteful number, since it uses less digits than its factorization.

1213322312311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14958.

The product of its digits is 1296, while the sum is 25.

Adding to 1213322312311 its reverse (1132132233121), we get a palindrome (2345454545432).

The spelling of 1213322312311 in words is "one trillion, two hundred thirteen billion, three hundred twenty-two million, three hundred twelve thousand, three hundred eleven".