215226013 has 8 divisors (see below), whose sum is σ = 217018368. Its totient is φ = 213440304.

The previous prime is 215225993. The next prime is 215226017. The reversal of 215226013 is 310622512.

215226013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-215226013 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 (215226017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78756 + ... + 81442.

It is an arithmetic number, because the mean of its divisors is an integer number (27127296).

Almost surely, 2^215226013 is an apocalyptic number.

It is an amenable number.

215226013 is a deficient number, since it is larger than the sum of its proper divisors (1792355).

215226013 is a wasteful number, since it uses less digits than its factorization.

215226013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 215226013 is about 14670.5832535724. The cubic root of 215226013 is about 599.2824876725.

Adding to 215226013 its reverse (310622512), we get a palindrome (525848525).

The spelling of 215226013 in words is "two hundred fifteen million, two hundred twenty-six thousand, thirteen".