2111235456 has 64 divisors (see below), whose sum is σ = 6117796800. Its totient is φ = 639767040.

The previous prime is 2111235403. The next prime is 2111235463. The reversal of 2111235456 is 6545321112.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

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, 245686 + ... + 254133.

It is an arithmetic number, because the mean of its divisors is an integer number (95590575).

Almost surely, 2^2111235456 is an apocalyptic number.

It is an amenable number.

2111235456 is an abundant number, since it is smaller than the sum of its proper divisors (4006561344).

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

2111235456 is a wasteful number, since it uses less digits than its factorization.

2111235456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499847 (or 499835 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 2111235456 is about 45948.1822926653. The cubic root of 2111235456 is about 1282.8588963230.

Adding to 2111235456 its reverse (6545321112), we get a palindrome (8656556568).

The spelling of 2111235456 in words is "two billion, one hundred eleven million, two hundred thirty-five thousand, four hundred fifty-six".