1211102223203 has 4 divisors (see below), whose sum is σ = 1243834715760. Its totient is φ = 1178369730648.

The previous prime is 1211102223173. The next prime is 1211102223217. The reversal of 1211102223203 is 3023222011121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1211102223203 - 2⁶ = 1211102223139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211102223283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16366246223 + ... + 16366246296.

It is an arithmetic number, because the mean of its divisors is an integer number (310958678940).

Almost surely, 2^{1211102223203} is an apocalyptic number.

1211102223203 is a deficient number, since it is larger than the sum of its proper divisors (32732492557).

1211102223203 is an equidigital number, since it uses as much as digits as its factorization.

1211102223203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32732492556.

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

Adding to 1211102223203 its reverse (3023222011121), we get a palindrome (4234324234324).

The spelling of 1211102223203 in words is "one trillion, two hundred eleven billion, one hundred two million, two hundred twenty-three thousand, two hundred three".