215148011 has 8 divisors (see below), whose sum is σ = 231930720. Its totient is φ = 198398592.

The previous prime is 215147969. The next prime is 215148023. The reversal of 215148011 is 110841512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215148011 is a prime.

It is a super-2 number, since 2×215148011² = 92577333274512242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215148211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6035 + ... + 21603.

It is an arithmetic number, because the mean of its divisors is an integer number (28991340).

Almost surely, 2^215148011 is an apocalyptic number.

215148011 is a deficient number, since it is larger than the sum of its proper divisors (16782709).

215148011 is a wasteful number, since it uses less digits than its factorization.

215148011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16645.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 215148011 is about 14667.9245634820. The cubic root of 215148011 is about 599.2100818014.

Adding to 215148011 its reverse (110841512), we get a palindrome (325989523).

The spelling of 215148011 in words is "two hundred fifteen million, one hundred forty-eight thousand, eleven".