1121321133012 has 96 divisors (see below), whose sum is σ = 2722780569600. Its totient is φ = 358781765760.

The previous prime is 1121321132983. The next prime is 1121321133017. The reversal of 1121321133012 is 2103311231211.

It is a super-2 number, since 2×1121321133012² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1121321133012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121321133017) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 40282243 + ... + 40310069.

It is an arithmetic number, because the mean of its divisors is an integer number (28362297600).

Almost surely, 2^{1121321133012} is an apocalyptic number.

1121321133012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121321133012 is an abundant number, since it is smaller than the sum of its proper divisors (1601459436588).

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

1121321133012 is a wasteful number, since it uses less digits than its factorization.

1121321133012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28741 (or 28739 counting only the distinct ones).

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

Adding to 1121321133012 its reverse (2103311231211), we get a palindrome (3224632364223).

The spelling of 1121321133012 in words is "one trillion, one hundred twenty-one billion, three hundred twenty-one million, one hundred thirty-three thousand, twelve".