215134200601 has 4 divisors (see below), whose sum is σ = 217551438900. Its totient is φ = 212716962304.

The previous prime is 215134200587. The next prime is 215134200623. The reversal of 215134200601 is 106002431512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124217478025 + 90916722576 = 352445^2 + 301524^2 .

It is a cyclic number.

It is not a de Polignac number, because 215134200601 - 2⁵ = 215134200569 is a prime.

It is a super-2 number, since 2×215134200601² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215134200641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208619016 + ... + 1208619193.

It is an arithmetic number, because the mean of its divisors is an integer number (54387859725).

Almost surely, 2^215134200601 is an apocalyptic number.

It is an amenable number.

215134200601 is a deficient number, since it is larger than the sum of its proper divisors (2417238299).

215134200601 is an equidigital number, since it uses as much as digits as its factorization.

215134200601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417238298.

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 215134200601 in words is "two hundred fifteen billion, one hundred thirty-four million, two hundred thousand, six hundred one".