213135207601 has 8 divisors (see below), whose sum is σ = 227109980520. Its totient is φ = 199320146688.

The previous prime is 213135207599. The next prime is 213135207653. The reversal of 213135207601 is 106702531312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 86683136400 + 126452071201 = 294420^2 + 355601^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 213135207601 - 2¹ = 213135207599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213135247601) 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, 39925246 + ... + 39930583.

It is an arithmetic number, because the mean of its divisors is an integer number (28388747565).

Almost surely, 2^213135207601 is an apocalyptic number.

It is an amenable number.

213135207601 is a deficient number, since it is larger than the sum of its proper divisors (13974772919).

213135207601 is a wasteful number, since it uses less digits than its factorization.

213135207601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79856003.

The product of its (nonzero) digits is 7560, while the sum is 31.

Adding to 213135207601 its reverse (106702531312), we get a palindrome (319837738913).

The spelling of 213135207601 in words is "two hundred thirteen billion, one hundred thirty-five million, two hundred seven thousand, six hundred one".