1121000001012 has 48 divisors (see below), whose sum is σ = 2912120680000. Its totient is φ = 372917818080.

The previous prime is 1121000001001. The next prime is 1121000001053. The reversal of 1121000001012 is 2101000001211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1121000000985 and 1121000001003.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 10346539 + ... + 10454322.

Almost surely, 2^{1121000001012} is an apocalyptic number.

1121000001012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121000001012 is an abundant number, since it is smaller than the sum of its proper divisors (1791120678988).

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

1121000001012 is a wasteful number, since it uses less digits than its factorization.

1121000001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20801373 (or 20801365 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1121000001012 its reverse (2101000001211), we get a palindrome (3222000002223).

The spelling of 1121000001012 in words is "one trillion, one hundred twenty-one billion, one thousand, twelve".