2135224221 has 8 divisors (see below), whose sum is σ = 3065963040. Its totient is φ = 1313984112.

The previous prime is 2135224207. The next prime is 2135224243. The reversal of 2135224221 is 1224225312.

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

It is not a de Polignac number, because 2135224221 - 2¹⁸ = 2134962077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2135224191 and 2135224200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135224261) 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, 27374631 + ... + 27374708.

It is an arithmetic number, because the mean of its divisors is an integer number (383245380).

Almost surely, 2^2135224221 is an apocalyptic number.

It is an amenable number.

2135224221 is a deficient number, since it is larger than the sum of its proper divisors (930738819).

2135224221 is a wasteful number, since it uses less digits than its factorization.

2135224221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54749355.

The product of its digits is 1920, while the sum is 24.

The square root of 2135224221 is about 46208.4864608223. The cubic root of 2135224221 is about 1287.6994071512.

Adding to 2135224221 its reverse (1224225312), we get a palindrome (3359449533).

The spelling of 2135224221 in words is "two billion, one hundred thirty-five million, two hundred twenty-four thousand, two hundred twenty-one".