1211110321304 has 32 divisors (see below), whose sum is σ = 2446576362720. Its totient is φ = 558730534656.

The previous prime is 1211110321297. The next prime is 1211110321307. The reversal of 1211110321304 is 4031230111121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211110321307) 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 7 ways as a sum of consecutive naturals, for example, 2296004 + ... + 2773779.

It is an arithmetic number, because the mean of its divisors is an integer number (76455511335).

Almost surely, 2^{1211110321304} is an apocalyptic number.

It is an amenable number.

1211110321304 is an abundant number, since it is smaller than the sum of its proper divisors (1235466041416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211110321304 is a wasteful number, since it uses less digits than its factorization.

1211110321304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5072099 (or 5072095 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1211110321304 its reverse (4031230111121), we get a palindrome (5242340432425).

The spelling of 1211110321304 in words is "one trillion, two hundred eleven billion, one hundred ten million, three hundred twenty-one thousand, three hundred four".