1211113264 has 10 divisors (see below), whose sum is σ = 2346531980. Its totient is φ = 605556624.

The previous prime is 1211113261. The next prime is 1211113297. The reversal of 1211113264 is 4623111121.

It is not an unprimeable number, because it can be changed into a prime (1211113261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37847274 + ... + 37847305.

It is an arithmetic number, because the mean of its divisors is an integer number (234653198).

Almost surely, 2^1211113264 is an apocalyptic number.

It is an amenable number.

1211113264 is a deficient number, since it is larger than the sum of its proper divisors (1135418716).

1211113264 is an equidigital number, since it uses as much as digits as its factorization.

1211113264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75694587 (or 75694581 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

The square root of 1211113264 is about 34801.0526277583. The cubic root of 1211113264 is about 1065.9289400657.

Adding to 1211113264 its reverse (4623111121), we get a palindrome (5834224385).

The spelling of 1211113264 in words is "one billion, two hundred eleven million, one hundred thirteen thousand, two hundred sixty-four".