1213003211211 has 12 divisors (see below), whose sum is σ = 1911398999640. Its totient is φ = 735153461280.

The previous prime is 1213003211183. The next prime is 1213003211267. The reversal of 1213003211211 is 1121123003121.

1213003211211 is a `hidden beast` number, since 1 + 2 + 130 + 0 + 321 + 1 + 211 = 666.

It is not a de Polignac number, because 1213003211211 - 2⁵ = 1213003211179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213003213211) 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 11 ways as a sum of consecutive naturals, for example, 6126278746 + ... + 6126278943.

It is an arithmetic number, because the mean of its divisors is an integer number (159283249970).

Almost surely, 2^{1213003211211} is an apocalyptic number.

1213003211211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1213003211211 is a deficient number, since it is larger than the sum of its proper divisors (698395788429).

1213003211211 is a wasteful number, since it uses less digits than its factorization.

1213003211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12252557706 (or 12252557703 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1213003211211 its reverse (1121123003121), we get a palindrome (2334126214332).

The spelling of 1213003211211 in words is "one trillion, two hundred thirteen billion, three million, two hundred eleven thousand, two hundred eleven".