1211211122203 has 8 divisors (see below), whose sum is σ = 1234067724800. Its totient is φ = 1188542640168.

The previous prime is 1211211122201. The next prime is 1211211122227. The reversal of 1211211122203 is 3022211121121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211211122203 - 2¹ = 1211211122201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211211122201) 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 7 ways as a sum of consecutive naturals, for example, 47017143 + ... + 47042896.

It is an arithmetic number, because the mean of its divisors is an integer number (154258465600).

Almost surely, 2^{1211211122203} is an apocalyptic number.

1211211122203 is a deficient number, since it is larger than the sum of its proper divisors (22856602597).

1211211122203 is an equidigital number, since it uses as much as digits as its factorization.

1211211122203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94060281.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1211211122203 its reverse (3022211121121), we get a palindrome (4233422243324).

The spelling of 1211211122203 in words is "one trillion, two hundred eleven billion, two hundred eleven million, one hundred twenty-two thousand, two hundred three".