2140222221 has 12 divisors (see below), whose sum is σ = 3157207872. Its totient is φ = 1396456776.

The previous prime is 2140222193. The next prime is 2140222223. The reversal of 2140222221 is 1222220412.

2140222221 is a `hidden beast` number, since 21 + 402 + 22 + 221 = 666.

It is not a de Polignac number, because 2140222221 - 2⁹ = 2140221709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2140222194 and 2140222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140222223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2529391 + ... + 2530236.

It is an arithmetic number, because the mean of its divisors is an integer number (263100656).

Almost surely, 2^2140222221 is an apocalyptic number.

It is an amenable number.

2140222221 is a deficient number, since it is larger than the sum of its proper divisors (1016985651).

2140222221 is a wasteful number, since it uses less digits than its factorization.

2140222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5059680 (or 5059677 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2140222221 is about 46262.5358254387. The cubic root of 2140222221 is about 1288.7033464553.

Adding to 2140222221 its reverse (1222220412), we get a palindrome (3362442633).

The spelling of 2140222221 in words is "two billion, one hundred forty million, two hundred twenty-two thousand, two hundred twenty-one".