215065020100 has 72 divisors (see below), whose sum is σ = 539354229120. Its totient is φ = 72908056320.

The previous prime is 215065020073. The next prime is 215065020109. The reversal of 215065020100 is 1020560512.

215065020100 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 2×215065020100² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215065020109) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1663744 + ... + 1788343.

It is an arithmetic number, because the mean of its divisors is an integer number (7491030960).

Almost surely, 2^215065020100 is an apocalyptic number.

215065020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215065020100 is an abundant number, since it is smaller than the sum of its proper divisors (324289209020).

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

215065020100 is a wasteful number, since it uses less digits than its factorization.

215065020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452197 (or 3452190 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 215065020100 its reverse (1020560512), we get a palindrome (216085580612).

The spelling of 215065020100 in words is "two hundred fifteen billion, sixty-five million, twenty thousand, one hundred".