11215121234 has 16 divisors (see below), whose sum is σ = 17077049856. Its totient is φ = 5522932800.

The previous prime is 11215121231. The next prime is 11215121243. The reversal of 11215121234 is 43212151211.

11215121234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11215121231) by changing a digit.

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, 100874 + ... + 180570.

It is an arithmetic number, because the mean of its divisors is an integer number (1067315616).

Almost surely, 2^11215121234 is an apocalyptic number.

11215121234 is a deficient number, since it is larger than the sum of its proper divisors (5861928622).

11215121234 is an equidigital number, since it uses as much as digits as its factorization.

11215121234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80761.

The product of its digits is 480, while the sum is 23.

Adding to 11215121234 its reverse (43212151211), we get a palindrome (54427272445).

The spelling of 11215121234 in words is "eleven billion, two hundred fifteen million, one hundred twenty-one thousand, two hundred thirty-four".