2136646221 has 8 divisors (see below), whose sum is σ = 2915114400. Its totient is φ = 1391304432.

The previous prime is 2136646153. The next prime is 2136646223. The reversal of 2136646221 is 1226466312.

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

It is not a de Polignac number, because 2136646221 - 2¹⁰ = 2136645197 is a prime.

It is a super-3 number, since 3×2136646221³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136646223) 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, 8281446 + ... + 8281703.

It is an arithmetic number, because the mean of its divisors is an integer number (364389300).

Almost surely, 2^2136646221 is an apocalyptic number.

It is an amenable number.

2136646221 is a deficient number, since it is larger than the sum of its proper divisors (778468179).

2136646221 is a wasteful number, since it uses less digits than its factorization.

2136646221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16563195.

The product of its digits is 20736, while the sum is 33.

The square root of 2136646221 is about 46223.8706838793. The cubic root of 2136646221 is about 1287.9852010584.

The spelling of 2136646221 in words is "two billion, one hundred thirty-six million, six hundred forty-six thousand, two hundred twenty-one".