1211340004203 has 16 divisors (see below), whose sum is σ = 1845893180160. Its totient is φ = 692178633696.

The previous prime is 1211340004177. The next prime is 1211340004207. The reversal of 1211340004203 is 3024000431121.

It is not a de Polignac number, because 1211340004203 - 2⁸ = 1211340003947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1211340004203.

It is not an unprimeable number, because it can be changed into a prime (1211340004207) 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, 333013 + ... + 1591721.

It is an arithmetic number, because the mean of its divisors is an integer number (115368323760).

Almost surely, 2^{1211340004203} is an apocalyptic number.

1211340004203 is a deficient number, since it is larger than the sum of its proper divisors (634553175957).

1211340004203 is a wasteful number, since it uses less digits than its factorization.

1211340004203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304546.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1211340004203 its reverse (3024000431121), we get a palindrome (4235340435324).

The spelling of 1211340004203 in words is "one trillion, two hundred eleven billion, three hundred forty million, four thousand, two hundred three".