14155521212 has 72 divisors (see below), whose sum is σ = 30518941824. Its totient is φ = 5716152288.

The previous prime is 14155521179. The next prime is 14155521217. The reversal of 14155521212 is 21212555141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14155521217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 278603 + ... + 325469.

It is an arithmetic number, because the mean of its divisors is an integer number (423874192).

Almost surely, 2^14155521212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14155521212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15259470912).

14155521212 is an abundant number, since it is smaller than the sum of its proper divisors (16363420612).

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

14155521212 is a wasteful number, since it uses less digits than its factorization.

14155521212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46975 (or 46966 counting only the distinct ones).

The product of its digits is 4000, while the sum is 29.

The spelling of 14155521212 in words is "fourteen billion, one hundred fifty-five million, five hundred twenty-one thousand, two hundred twelve".