2133685221 has 8 divisors (see below), whose sum is σ = 2846668704. Its totient is φ = 1421579280.

The previous prime is 2133685201. The next prime is 2133685243. The reversal of 2133685221 is 1225863312.

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

It is not a de Polignac number, because 2133685221 - 2⁷ = 2133685093 is a prime.

It is a super-2 number, since 2×2133685221² = 9105225244627637682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133685201) 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, 213690 + ... + 223451.

It is an arithmetic number, because the mean of its divisors is an integer number (355833588).

Almost surely, 2^2133685221 is an apocalyptic number.

It is an amenable number.

2133685221 is a deficient number, since it is larger than the sum of its proper divisors (712983483).

2133685221 is a wasteful number, since it uses less digits than its factorization.

2133685221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438771.

The product of its digits is 17280, while the sum is 33.

The square root of 2133685221 is about 46191.8306738324. The cubic root of 2133685221 is about 1287.3899555426.

The spelling of 2133685221 in words is "two billion, one hundred thirty-three million, six hundred eighty-five thousand, two hundred twenty-one".