215006315220 has 48 divisors (see below), whose sum is σ = 668908537920. Its totient is φ = 57335017248.

The previous prime is 215006315141. The next prime is 215006315243. The reversal of 215006315220 is 22513600512.

It is a happy number.

215006315220 is a `hidden beast` number, since 2 + 1 + 5 + 0 + 0 + 631 + 5 + 2 + 20 = 666.

215006315220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199079382 + ... + 199080461.

It is an arithmetic number, because the mean of its divisors is an integer number (13935594540).

Almost surely, 2^215006315220 is an apocalyptic number.

215006315220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215006315220 is an abundant number, since it is smaller than the sum of its proper divisors (453902222700).

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

215006315220 is a wasteful number, since it uses less digits than its factorization.

215006315220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398159861 (or 398159853 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 215006315220 its reverse (22513600512), we get a palindrome (237519915732).

The spelling of 215006315220 in words is "two hundred fifteen billion, six million, three hundred fifteen thousand, two hundred twenty".