215023573212 has 96 divisors (see below), whose sum is σ = 585993408000. Its totient is φ = 61341307776.

The previous prime is 215023573189. The next prime is 215023573229. The reversal of 215023573212 is 212375320512.

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 31 ways as a sum of consecutive naturals, for example, 2672808 + ... + 2752080.

It is an arithmetic number, because the mean of its divisors is an integer number (6104098000).

Almost surely, 2^215023573212 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 215023573212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292996704000).

215023573212 is an abundant number, since it is smaller than the sum of its proper divisors (370969834788).

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

215023573212 is a wasteful number, since it uses less digits than its factorization.

215023573212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79960 (or 79944 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

Adding to 215023573212 its reverse (212375320512), we get a palindrome (427398893724).

The spelling of 215023573212 in words is "two hundred fifteen billion, twenty-three million, five hundred seventy-three thousand, two hundred twelve".