1121212000012 has 24 divisors (see below), whose sum is σ = 2113094541600. Its totient is φ = 517472382336.

The previous prime is 1121211999997. The next prime is 1121212000019. The reversal of 1121212000012 is 2100002121211.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1121211999956 and 1121212000001.

It is not an unprimeable number, because it can be changed into a prime (1121212000019) 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 7 ways as a sum of consecutive naturals, for example, 2933664 + ... + 3293752.

It is an arithmetic number, because the mean of its divisors is an integer number (88045605900).

Almost surely, 2^{1121212000012} is an apocalyptic number.

It is an amenable number.

1121212000012 is a deficient number, since it is larger than the sum of its proper divisors (991882541588).

1121212000012 is a wasteful number, since it uses less digits than its factorization.

1121212000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419985 (or 419983 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1121212000012 its reverse (2100002121211), we get a palindrome (3221214121223).

The spelling of 1121212000012 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, twelve", and thus it is an aban number.