1311020222132 has 12 divisors (see below), whose sum is σ = 2429243352900. Its totient is φ = 616950692736.

The previous prime is 1311020222093. The next prime is 1311020222153. The reversal of 1311020222132 is 2312220201131.

It can be written as a sum of positive squares in 2 ways, for example, as 1219818638116 + 91201584016 = 1104454^2 + 301996^2 .

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, 9639854507 + ... + 9639854642.

It is an arithmetic number, because the mean of its divisors is an integer number (202436946075).

Almost surely, 2^{1311020222132} is an apocalyptic number.

It is an amenable number.

1311020222132 is a deficient number, since it is larger than the sum of its proper divisors (1118223130768).

1311020222132 is a wasteful number, since it uses less digits than its factorization.

1311020222132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19279709170 (or 19279709168 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1311020222132 its reverse (2312220201131), we get a palindrome (3623240423263).

The spelling of 1311020222132 in words is "one trillion, three hundred eleven billion, twenty million, two hundred twenty-two thousand, one hundred thirty-two".