22231210312 has 8 divisors (see below), whose sum is σ = 41683519350. Its totient is φ = 11115605152.

The previous prime is 22231210297. The next prime is 22231210321. The reversal of 22231210312 is 21301213222.

It can be written as a sum of positive squares in only one way, i.e., 21475730116 + 755480196 = 146546^2 + 27486^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 22231210312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389450637 + ... + 1389450652.

Almost surely, 2^22231210312 is an apocalyptic number.

It is an amenable number.

22231210312 is a deficient number, since it is larger than the sum of its proper divisors (19452309038).

22231210312 is a wasteful number, since it uses less digits than its factorization.

22231210312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778901295 (or 2778901291 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22231210312 its reverse (21301213222), we get a palindrome (43532423534).

The spelling of 22231210312 in words is "twenty-two billion, two hundred thirty-one million, two hundred ten thousand, three hundred twelve".