1211203002003 has 8 divisors (see below), whose sum is σ = 1615053017088. Its totient is φ = 807410827464.

The previous prime is 1211203001993. The next prime is 1211203002017. The reversal of 1211203002003 is 3002003021121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1211203002003 - 2⁵ = 1211203001971 is a prime.

It is a super-2 number, since 2×1211203002003² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211201002003) 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 7 ways as a sum of consecutive naturals, for example, 14411251 + ... + 14495052.

It is an arithmetic number, because the mean of its divisors is an integer number (201881627136).

Almost surely, 2^{1211203002003} is an apocalyptic number.

1211203002003 is a deficient number, since it is larger than the sum of its proper divisors (403850015085).

1211203002003 is a wasteful number, since it uses less digits than its factorization.

1211203002003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28920273.

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

Adding to 1211203002003 its reverse (3002003021121), we get a palindrome (4213206023124).

The spelling of 1211203002003 in words is "one trillion, two hundred eleven billion, two hundred three million, two thousand, three".