2131210222 has 16 divisors (see below), whose sum is σ = 3352754592. Its totient is φ = 1014096160.

The previous prime is 2131210187. The next prime is 2131210231. The reversal of 2131210222 is 2220121312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2131210196 and 2131210205.

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, 108529 + ... + 126652.

It is an arithmetic number, because the mean of its divisors is an integer number (209547162).

Almost surely, 2^2131210222 is an apocalyptic number.

2131210222 is a deficient number, since it is larger than the sum of its proper divisors (1221544370).

2131210222 is a wasteful number, since it uses less digits than its factorization.

2131210222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235403.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2131210222 is about 46165.0324596442. The cubic root of 2131210222 is about 1286.8919874247.

Adding to 2131210222 its reverse (2220121312), we get a palindrome (4351331534).

The spelling of 2131210222 in words is "two billion, one hundred thirty-one million, two hundred ten thousand, two hundred twenty-two".