1211203322133 has 16 divisors (see below), whose sum is σ = 1845662138496. Its totient is φ = 692109066240.

The previous prime is 1211203322107. The next prime is 1211203322137. The reversal of 1211203322133 is 3312233021121.

It is not a de Polignac number, because 1211203322133 - 2¹⁰ = 1211203321109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211203322137) 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, 2338485 + ... + 2809077.

It is an arithmetic number, because the mean of its divisors is an integer number (115353883656).

Almost surely, 2^{1211203322133} is an apocalyptic number.

It is an amenable number.

1211203322133 is a deficient number, since it is larger than the sum of its proper divisors (634458816363).

1211203322133 is a wasteful number, since it uses less digits than its factorization.

1211203322133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593164.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1211203322133 its reverse (3312233021121), we get a palindrome (4523436343254).

The spelling of 1211203322133 in words is "one trillion, two hundred eleven billion, two hundred three million, three hundred twenty-two thousand, one hundred thirty-three".