1211144204011 has 8 divisors (see below), whose sum is σ = 1384237757664. Its totient is φ = 1038068888640.

The previous prime is 1211144203987. The next prime is 1211144204033. The reversal of 1211144204011 is 1104024411121.

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

It is not a de Polignac number, because 1211144204011 - 2⁵ = 1211144203979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211144204911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4416970 + ... + 4683151.

It is an arithmetic number, because the mean of its divisors is an integer number (173029719708).

Almost surely, 2^{1211144204011} is an apocalyptic number.

1211144204011 is a deficient number, since it is larger than the sum of its proper divisors (173093553653).

1211144204011 is an equidigital number, since it uses as much as digits as its factorization.

1211144204011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9119141.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 1211144204011 its reverse (1104024411121), we get a palindrome (2315168615132).

The spelling of 1211144204011 in words is "one trillion, two hundred eleven billion, one hundred forty-four million, two hundred four thousand, eleven".