215201013 has 4 divisors (see below), whose sum is σ = 286934688. Its totient is φ = 143467340.

The previous prime is 215201009. The next prime is 215201033. The reversal of 215201013 is 310102512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 215201013 - 2² = 215201009 is a prime.

It is a super-2 number, since 2×215201013² = 92622951992452338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215200983 and 215201001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215201033) 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 3 ways as a sum of consecutive naturals, for example, 35866833 + ... + 35866838.

It is an arithmetic number, because the mean of its divisors is an integer number (71733672).

Almost surely, 2^215201013 is an apocalyptic number.

It is an amenable number.

215201013 is a deficient number, since it is larger than the sum of its proper divisors (71733675).

215201013 is an equidigital number, since it uses as much as digits as its factorization.

215201013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71733674.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 215201013 is about 14669.7311836311. The cubic root of 215201013 is about 599.2592831628.

Adding to 215201013 its reverse (310102512), we get a palindrome (525303525).

The spelling of 215201013 in words is "two hundred fifteen million, two hundred one thousand, thirteen".