2131243222 has 16 divisors (see below), whose sum is σ = 3277405152. Its totient is φ = 1038815680.

The previous prime is 2131243187. The next prime is 2131243307. The reversal of 2131243222 is 2223421312.

It is a junction number, because it is equal to n+sod(n) for n = 2131243193 and 2131243202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102588 + ... + 121600.

It is an arithmetic number, because the mean of its divisors is an integer number (204837822).

Almost surely, 2^2131243222 is an apocalyptic number.

2131243222 is a deficient number, since it is larger than the sum of its proper divisors (1146161930).

2131243222 is a wasteful number, since it uses less digits than its factorization.

2131243222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20423.

The product of its digits is 1152, while the sum is 22.

The square root of 2131243222 is about 46165.3898716344. The cubic root of 2131243222 is about 1286.8986295376.

Adding to 2131243222 its reverse (2223421312), we get a palindrome (4354664534).

The spelling of 2131243222 in words is "two billion, one hundred thirty-one million, two hundred forty-three thousand, two hundred twenty-two".