1211122113312 has 24 divisors (see below), whose sum is σ = 3179195547696. Its totient is φ = 403707371072.

The previous prime is 1211122113287. The next prime is 1211122113359. The reversal of 1211122113312 is 2133112211121.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

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, 6307927578 + ... + 6307927769.

It is an arithmetic number, because the mean of its divisors is an integer number (132466481154).

Almost surely, 2^{1211122113312} is an apocalyptic number.

1211122113312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211122113312 is an abundant number, since it is smaller than the sum of its proper divisors (1968073434384).

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

1211122113312 is a wasteful number, since it uses less digits than its factorization.

1211122113312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12615855360 (or 12615855352 counting only the distinct ones).

The product of its digits is 144, while the sum is 21.

Adding to 1211122113312 its reverse (2133112211121), we get a palindrome (3344234324433).

The spelling of 1211122113312 in words is "one trillion, two hundred eleven billion, one hundred twenty-two million, one hundred thirteen thousand, three hundred twelve".