215120151 has 16 divisors (see below), whose sum is σ = 319217920. Its totient is φ = 143178840.

The previous prime is 215120149. The next prime is 215120167. The reversal of 215120151 is 151021512.

215120151 is a `hidden beast` number, since 2 + 1 + 512 + 0 + 151 = 666.

It is not a de Polignac number, because 215120151 - 2¹ = 215120149 is a prime.

It is a Duffinian number.

It is a congruent 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, 11166 + ... + 23556.

It is an arithmetic number, because the mean of its divisors is an integer number (19951120).

Almost surely, 2^215120151 is an apocalyptic number.

215120151 is a deficient number, since it is larger than the sum of its proper divisors (104097769).

215120151 is a wasteful number, since it uses less digits than its factorization.

215120151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13043 (or 13037 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 215120151 is about 14666.9748414593. The cubic root of 215120151 is about 599.1842163310.

Adding to 215120151 its reverse (151021512), we get a palindrome (366141663).

The spelling of 215120151 in words is "two hundred fifteen million, one hundred twenty thousand, one hundred fifty-one".