1311222320322 has 16 divisors (see below), whose sum is σ = 2631911953152. Its totient is φ = 435496221360.

The previous prime is 1311222320321. The next prime is 1311222320341. The reversal of 1311222320322 is 2230232221131.

It is a junction number, because it is equal to n+sod(n) for n = 1311222320292 and 1311222320301.

It is not an unprimeable number, because it can be changed into a prime (1311222320321) 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, 394469554 + ... + 394472877.

It is an arithmetic number, because the mean of its divisors is an integer number (164494497072).

Almost surely, 2^{1311222320322} is an apocalyptic number.

1311222320322 is an abundant number, since it is smaller than the sum of its proper divisors (1320689632830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311222320322 is a wasteful number, since it uses less digits than its factorization.

1311222320322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788942713.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1311222320322 its reverse (2230232221131), we get a palindrome (3541454541453).

The spelling of 1311222320322 in words is "one trillion, three hundred eleven billion, two hundred twenty-two million, three hundred twenty thousand, three hundred twenty-two".