1311122122112 has 64 divisors (see below), whose sum is σ = 2860808932800. Its totient is φ = 593590080000.

The previous prime is 1311122122109. The next prime is 1311122122129. The reversal of 1311122122112 is 2112212211131.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1501562 + ... + 2208377.

It is an arithmetic number, because the mean of its divisors is an integer number (44700139575).

Almost surely, 2^{1311122122112} is an apocalyptic number.

It is an amenable number.

1311122122112 is an abundant number, since it is smaller than the sum of its proper divisors (1549686810688).

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

1311122122112 is a wasteful number, since it uses less digits than its factorization.

1311122122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710215 (or 3710203 counting only the distinct ones).

The product of its digits is 96, while the sum is 20.

Adding to 1311122122112 its reverse (2112212211131), we get a palindrome (3423334333243).

The spelling of 1311122122112 in words is "one trillion, three hundred eleven billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred twelve".