1212003120003 has 16 divisors (see below), whose sum is σ = 1746505469856. Its totient is φ = 743193803520.

The previous prime is 1212003119953. The next prime is 1212003120019. The reversal of 1212003120003 is 3000213002121.

It is not a de Polignac number, because 1212003120003 - 2⁹ = 1212003119491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212003120023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55286200 + ... + 55308117.

It is an arithmetic number, because the mean of its divisors is an integer number (109156591866).

Almost surely, 2^{1212003120003} is an apocalyptic number.

1212003120003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1212003120003 is a deficient number, since it is larger than the sum of its proper divisors (534502349853).

1212003120003 is a wasteful number, since it uses less digits than its factorization.

1212003120003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110594614.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1212003120003 its reverse (3000213002121), we get a palindrome (4212216122124).

The spelling of 1212003120003 in words is "one trillion, two hundred twelve billion, three million, one hundred twenty thousand, three".