1121212113312 has 24 divisors (see below), whose sum is σ = 2943181797696. Its totient is φ = 373737371072.

The previous prime is 1121212113277. The next prime is 1121212113323. The reversal of 1121212113312 is 2133112121211.

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

It is a super-2 number, since 2×1121212113312² (a number of 25 digits) contains 22 as substring.

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, 5839646328 + ... + 5839646519.

It is an arithmetic number, because the mean of its divisors is an integer number (122632574904).

Almost surely, 2^{1121212113312} is an apocalyptic number.

1121212113312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121212113312 is an abundant number, since it is smaller than the sum of its proper divisors (1821969684384).

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

1121212113312 is a wasteful number, since it uses less digits than its factorization.

1121212113312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11679292860 (or 11679292852 counting only the distinct ones).

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

Adding to 1121212113312 its reverse (2133112121211), we get a palindrome (3254324234523).

The spelling of 1121212113312 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, one hundred thirteen thousand, three hundred twelve".