1121321000100 has 144 divisors (see below), whose sum is σ = 3708368843648. Its totient is φ = 256265026560.

The previous prime is 1121321000099. The next prime is 1121321000101. The reversal of 1121321000100 is 10001231211.

It is an interprime number because it is at equal distance from previous prime (1121321000099) and next prime (1121321000101).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1121321000101) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 16171104 + ... + 16240296.

Almost surely, 2^{1121321000100} is an apocalyptic number.

1121321000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121321000100 is an abundant number, since it is smaller than the sum of its proper divisors (2587047843548).

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

1121321000100 is a wasteful number, since it uses less digits than its factorization.

1121321000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76934 (or 76927 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 1121321000100 its reverse (10001231211), we get a palindrome (1131322231311).

The spelling of 1121321000100 in words is "one trillion, one hundred twenty-one billion, three hundred twenty-one million, one hundred", and thus it is an aban number.