1212001120012 has 12 divisors (see below), whose sum is σ = 2121075353880. Its totient is φ = 605979590336.

The previous prime is 1212001120009. The next prime is 1212001120019. The reversal of 1212001120012 is 2100211002121.

It is a junction number, because it is equal to n+sod(n) for n = 1212001119974 and 1212001120001.

It is not an unprimeable number, because it can be changed into a prime (1212001120019) 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 3 ways as a sum of consecutive naturals, for example, 5112013 + ... + 5343844.

It is an arithmetic number, because the mean of its divisors is an integer number (176756279490).

Almost surely, 2^{1212001120012} is an apocalyptic number.

It is an amenable number.

1212001120012 is a deficient number, since it is larger than the sum of its proper divisors (909074233868).

1212001120012 is a wasteful number, since it uses less digits than its factorization.

1212001120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10484840 (or 10484838 counting only the distinct ones).

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

Adding to 1212001120012 its reverse (2100211002121), we get a palindrome (3312212122133).

The spelling of 1212001120012 in words is "one trillion, two hundred twelve billion, one million, one hundred twenty thousand, twelve".