1212112120003 has 4 divisors (see below), whose sum is σ = 1275907494760. Its totient is φ = 1148316745248.

The previous prime is 1212112120001. The next prime is 1212112120007. The reversal of 1212112120003 is 3000212112121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212112120003 - 2¹ = 1212112120001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212112120001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31897687350 + ... + 31897687387.

It is an arithmetic number, because the mean of its divisors is an integer number (318976873690).

Almost surely, 2^{1212112120003} is an apocalyptic number.

1212112120003 is a deficient number, since it is larger than the sum of its proper divisors (63795374757).

1212112120003 is an equidigital number, since it uses as much as digits as its factorization.

1212112120003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63795374756.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1212112120003 its reverse (3000212112121), we get a palindrome (4212324232124).

The spelling of 1212112120003 in words is "one trillion, two hundred twelve billion, one hundred twelve million, one hundred twenty thousand, three".