1211341210203 has 32 divisors (see below), whose sum is σ = 1702516584960. Its totient is φ = 763983601920.

The previous prime is 1211341210171. The next prime is 1211341210231. The reversal of 1211341210203 is 3020121431121.

It is not a de Polignac number, because 1211341210203 - 2⁵ = 1211341210171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211341210203.

It is not an unprimeable number, because it can be changed into a prime (1211341210283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139535023 + ... + 139543703.

It is an arithmetic number, because the mean of its divisors is an integer number (53203643280).

Almost surely, 2^{1211341210203} is an apocalyptic number.

1211341210203 is a deficient number, since it is larger than the sum of its proper divisors (491175374757).

1211341210203 is a wasteful number, since it uses less digits than its factorization.

1211341210203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11859.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1211341210203 its reverse (3020121431121), we get a palindrome (4231462641324).

The spelling of 1211341210203 in words is "one trillion, two hundred eleven billion, three hundred forty-one million, two hundred ten thousand, two hundred three".