1212201211203 has 6 divisors (see below), whose sum is σ = 1750957305084. Its totient is φ = 808134140796.

The previous prime is 1212201211181. The next prime is 1212201211223. The reversal of 1212201211203 is 3021121022121.

1212201211203 is a `hidden beast` number, since 121 + 220 + 121 + 1 + 203 = 666.

It is not a de Polignac number, because 1212201211203 - 2¹⁰ = 1212201210179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212201211223) 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 5 ways as a sum of consecutive naturals, for example, 67344511725 + ... + 67344511742.

It is an arithmetic number, because the mean of its divisors is an integer number (291826217514).

Almost surely, 2^{1212201211203} is an apocalyptic number.

1212201211203 is a deficient number, since it is larger than the sum of its proper divisors (538756093881).

1212201211203 is a wasteful number, since it uses less digits than its factorization.

1212201211203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134689023473 (or 134689023470 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1212201211203 its reverse (3021121022121), we get a palindrome (4233322233324).

The spelling of 1212201211203 in words is "one trillion, two hundred twelve billion, two hundred one million, two hundred eleven thousand, two hundred three".