215928324122 has 48 divisors (see below), whose sum is σ = 390830287680. Its totient is φ = 87634287936.

The previous prime is 215928324107. The next prime is 215928324133. The reversal of 215928324122 is 221423829512.

215928324122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 215928324122.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14846438 + ... + 14860974.

It is an arithmetic number, because the mean of its divisors is an integer number (8142297660).

Almost surely, 2^215928324122 is an apocalyptic number.

215928324122 is a deficient number, since it is larger than the sum of its proper divisors (174901963558).

215928324122 is a wasteful number, since it uses less digits than its factorization.

215928324122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17523 (or 17504 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The spelling of 215928324122 in words is "two hundred fifteen billion, nine hundred twenty-eight million, three hundred twenty-four thousand, one hundred twenty-two".