2136601321 has 4 divisors (see below), whose sum is σ = 2136764032. Its totient is φ = 2136438612.

The previous prime is 2136601309. The next prime is 2136601333. The reversal of 2136601321 is 1231066312.

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 an interprime number because it is at equal distance from previous prime (2136601309) and next prime (2136601333).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2136601321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2136601301) 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, 59745 + ... + 88558.

It is an arithmetic number, because the mean of its divisors is an integer number (534191008).

Almost surely, 2^2136601321 is an apocalyptic number.

It is an amenable number.

2136601321 is a deficient number, since it is larger than the sum of its proper divisors (162711).

2136601321 is a wasteful number, since it uses less digits than its factorization.

2136601321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162710.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 2136601321 is about 46223.3850015336. The cubic root of 2136601321 is about 1287.9761789844.

Adding to 2136601321 its reverse (1231066312), we get a palindrome (3367667633).

The spelling of 2136601321 in words is "two billion, one hundred thirty-six million, six hundred one thousand, three hundred twenty-one".