215325422020 has 12 divisors (see below), whose sum is σ = 452183386284. Its totient is φ = 86130168800.

The previous prime is 215325421991. The next prime is 215325422021. The reversal of 215325422020 is 20224523512.

215325422020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 55817842564 + 159507579456 = 236258^2 + 399384^2 .

It is a super-2 number, since 2×215325422020² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 215325422020.

It is not an unprimeable number, because it can be changed into a prime (215325422021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5383135531 + ... + 5383135570.

It is an arithmetic number, because the mean of its divisors is an integer number (37681948857).

Almost surely, 2^215325422020 is an apocalyptic number.

215325422020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215325422020 is an abundant number, since it is smaller than the sum of its proper divisors (236857964264).

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

215325422020 is a wasteful number, since it uses less digits than its factorization.

215325422020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10766271110 (or 10766271108 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 215325422020 its reverse (20224523512), we get a palindrome (235549945532).

The spelling of 215325422020 in words is "two hundred fifteen billion, three hundred twenty-five million, four hundred twenty-two thousand, twenty".