1211064203 has 4 divisors (see below), whose sum is σ = 1211149368. Its totient is φ = 1210979040.

The previous prime is 1211064193. The next prime is 1211064247. The reversal of 1211064203 is 3024601121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1211064203 - 2¹⁸ = 1210802059 is a prime.

It is a super-3 number, since 3×1211064203³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211064263) 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 3 ways as a sum of consecutive naturals, for example, 15518 + ... + 51603.

It is an arithmetic number, because the mean of its divisors is an integer number (302787342).

Almost surely, 2^1211064203 is an apocalyptic number.

1211064203 is a deficient number, since it is larger than the sum of its proper divisors (85165).

1211064203 is an equidigital number, since it uses as much as digits as its factorization.

1211064203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85164.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1211064203 is about 34800.3477425154. The cubic root of 1211064203 is about 1065.9145466291.

Adding to 1211064203 its reverse (3024601121), we get a palindrome (4235665324).

The spelling of 1211064203 in words is "one billion, two hundred eleven million, sixty-four thousand, two hundred three".