1311000222320 has 20 divisors (see below), whose sum is σ = 3048075517080. Its totient is φ = 524400088896.

The previous prime is 1311000222307. The next prime is 1311000222347. The reversal of 1311000222320 is 232220001131.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8193751310 + ... + 8193751469.

It is an arithmetic number, because the mean of its divisors is an integer number (152403775854).

Almost surely, 2^{1311000222320} is an apocalyptic number.

1311000222320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311000222320 is an abundant number, since it is smaller than the sum of its proper divisors (1737075294760).

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

1311000222320 is a wasteful number, since it uses less digits than its factorization.

1311000222320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16387502792 (or 16387502786 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1311000222320 its reverse (232220001131), we get a palindrome (1543220223451).

The spelling of 1311000222320 in words is "one trillion, three hundred eleven billion, two hundred twenty-two thousand, three hundred twenty".