215115346212 has 96 divisors (see below), whose sum is σ = 555337776000. Its totient is φ = 64379308032.

The previous prime is 215115346207. The next prime is 215115346223. The reversal of 215115346212 is 212643511512.

215115346212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×215115346212² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 33353164 + ... + 33359612.

It is an arithmetic number, because the mean of its divisors is an integer number (5784768500).

Almost surely, 2^215115346212 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 215115346212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277668888000).

215115346212 is an abundant number, since it is smaller than the sum of its proper divisors (340222429788).

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

215115346212 is a wasteful number, since it uses less digits than its factorization.

215115346212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12285 (or 12283 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

Adding to 215115346212 its reverse (212643511512), we get a palindrome (427758857724).

The spelling of 215115346212 in words is "two hundred fifteen billion, one hundred fifteen million, three hundred forty-six thousand, two hundred twelve".