1121000001212 has 48 divisors (see below), whose sum is σ = 2419078513152. Its totient is φ = 442624512960.

The previous prime is 1121000001211. The next prime is 1121000001221. The reversal of 1121000001212 is 2121000001211.

It is a junction number, because it is equal to n+sod(n) for n = 1121000001193 and 1121000001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121000001211) 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 15 ways as a sum of consecutive naturals, for example, 2753864 + ... + 3134607.

It is an arithmetic number, because the mean of its divisors is an integer number (50397469024).

Almost surely, 2^{1121000001212} is an apocalyptic number.

It is an amenable number.

1121000001212 is an abundant number, since it is smaller than the sum of its proper divisors (1298078511940).

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

1121000001212 is a wasteful number, since it uses less digits than its factorization.

1121000001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5889018 (or 5889016 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1121000001212 its reverse (2121000001211), we get a palindrome (3242000002423).

Subtracting 1121000001212 from its reverse (2121000001211), we obtain a palindrome (999999999999).

The spelling of 1121000001212 in words is "one trillion, one hundred twenty-one billion, one thousand, two hundred twelve".