1211104412239 has 4 divisors (see below), whose sum is σ = 1211243420656. Its totient is φ = 1210965403824.

The previous prime is 1211104412213. The next prime is 1211104412257. The reversal of 1211104412239 is 9322144011121.

It is a happy number.

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 1211104412239 - 2¹⁹ = 1211103887951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211104412239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211104412269) 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, 69491139 + ... + 69508564.

It is an arithmetic number, because the mean of its divisors is an integer number (302810855164).

Almost surely, 2^{1211104412239} is an apocalyptic number.

1211104412239 is a deficient number, since it is larger than the sum of its proper divisors (139008417).

1211104412239 is an equidigital number, since it uses as much as digits as its factorization.

1211104412239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139008416.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 1211104412239 in words is "one trillion, two hundred eleven billion, one hundred four million, four hundred twelve thousand, two hundred thirty-nine".