215120147 has 16 divisors (see below), whose sum is σ = 250024320. Its totient is φ = 183024000.

The previous prime is 215120141. The next prime is 215120149. The reversal of 215120147 is 741021512.

215120147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 215120147 - 2⁶ = 215120083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215120141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11147 + ... + 23547.

It is an arithmetic number, because the mean of its divisors is an integer number (15626520).

Almost surely, 2^215120147 is an apocalyptic number.

215120147 is a deficient number, since it is larger than the sum of its proper divisors (34904173).

215120147 is a wasteful number, since it uses less digits than its factorization.

215120147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12514.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 215120147 is about 14666.9747050985. The cubic root of 215120147 is about 599.1842126172.

Adding to 215120147 its reverse (741021512), we get a palindrome (956141659).

The spelling of 215120147 in words is "two hundred fifteen million, one hundred twenty thousand, one hundred forty-seven".