215213221032 has 64 divisors (see below), whose sum is σ = 551576995200. Its totient is φ = 69934556160.

The previous prime is 215213221021. The next prime is 215213221033. The reversal of 215213221032 is 230122312512.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 215213220993 and 215213221011.

It is not an unprimeable number, because it can be changed into a prime (215213221033) 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 15 ways as a sum of consecutive naturals, for example, 1214988 + ... + 1380804.

It is an arithmetic number, because the mean of its divisors is an integer number (8618390550).

Almost surely, 2^215213221032 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 215213221032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275788497600).

215213221032 is an abundant number, since it is smaller than the sum of its proper divisors (336363774168).

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

215213221032 is a wasteful number, since it uses less digits than its factorization.

215213221032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167186 (or 167182 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 215213221032 its reverse (230122312512), we get a palindrome (445335533544).

The spelling of 215213221032 in words is "two hundred fifteen billion, two hundred thirteen million, two hundred twenty-one thousand, thirty-two".