1212112220003 has 12 divisors (see below), whose sum is σ = 1256356670760. Its totient is φ = 1169261301120.

The previous prime is 1212112219999. The next prime is 1212112220063. The reversal of 1212112220003 is 3000222112121.

It is not a de Polignac number, because 1212112220003 - 2² = 1212112219999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212112220063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3901325 + ... + 4200542.

It is an arithmetic number, because the mean of its divisors is an integer number (104696389230).

Almost surely, 2^{1212112220003} is an apocalyptic number.

1212112220003 is a deficient number, since it is larger than the sum of its proper divisors (44244450757).

1212112220003 is an frugal number, since it uses more digits than its factorization.

1212112220003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8102038 (or 8101997 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1212112220003 its reverse (3000222112121), we get a palindrome (4212334332124).

The spelling of 1212112220003 in words is "one trillion, two hundred twelve billion, one hundred twelve million, two hundred twenty thousand, three".