11212121514 has 16 divisors (see below), whose sum is σ = 24462810720. Its totient is φ = 3397612560.

The previous prime is 11212121513. The next prime is 11212121551. The reversal of 11212121514 is 41512121211.

11212121514 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 (11212121513) 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, 84940249 + ... + 84940380.

It is an arithmetic number, because the mean of its divisors is an integer number (1528925670).

Almost surely, 2^11212121514 is an apocalyptic number.

11212121514 is an abundant number, since it is smaller than the sum of its proper divisors (13250689206).

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

11212121514 is a wasteful number, since it uses less digits than its factorization.

11212121514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169880645.

The product of its digits is 160, while the sum is 21.

Adding to 11212121514 its reverse (41512121211), we get a palindrome (52724242725).

The spelling of 11212121514 in words is "eleven billion, two hundred twelve million, one hundred twenty-one thousand, five hundred fourteen".