2131222322 has 4 divisors (see below), whose sum is σ = 3196833486. Its totient is φ = 1065611160.

The previous prime is 2131222283. The next prime is 2131222349. The reversal of 2131222322 is 2232221312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1837751161 + 293471161 = 42869^2 + 17131^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2131222294 and 2131222303.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532805579 + ... + 532805582.

Almost surely, 2^2131222322 is an apocalyptic number.

2131222322 is a deficient number, since it is larger than the sum of its proper divisors (1065611164).

2131222322 is a wasteful number, since it uses less digits than its factorization.

2131222322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065611163.

The product of its digits is 576, while the sum is 20.

The square root of 2131222322 is about 46165.1635110285. The cubic root of 2131222322 is about 1286.8944228741.

Adding to 2131222322 its reverse (2232221312), we get a palindrome (4363443634).

It can be divided in two parts, 21312 and 22322, that added together give a palindrome (43634).

The spelling of 2131222322 in words is "two billion, one hundred thirty-one million, two hundred twenty-two thousand, three hundred twenty-two".