1101312331212 has 12 divisors (see below), whose sum is σ = 2569728772856. Its totient is φ = 367104110400.

The previous prime is 1101312331201. The next prime is 1101312331247. The reversal of 1101312331212 is 2121332131011.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45888013789 + ... + 45888013812.

Almost surely, 2^{1101312331212} is an apocalyptic number.

1101312331212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1101312331212 is an abundant number, since it is smaller than the sum of its proper divisors (1468416441644).

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

1101312331212 is a wasteful number, since it uses less digits than its factorization.

1101312331212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91776027608 (or 91776027606 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1101312331212 its reverse (2121332131011), we get a palindrome (3222644462223).

The spelling of 1101312331212 in words is "one trillion, one hundred one billion, three hundred twelve million, three hundred thirty-one thousand, two hundred twelve".