22231471012 has 6 divisors (see below), whose sum is σ = 38905074278. Its totient is φ = 11115735504.

The previous prime is 22231470997. The next prime is 22231471019. The reversal of 22231471012 is 21017413222.

It can be written as a sum of positive squares in only one way, i.e., 18394411876 + 3837059136 = 135626^2 + 61944^2 .

It is not an unprimeable number, because it can be changed into a prime (22231471019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778933873 + ... + 2778933880.

Almost surely, 2^22231471012 is an apocalyptic number.

It is an amenable number.

22231471012 is a deficient number, since it is larger than the sum of its proper divisors (16673603266).

22231471012 is a wasteful number, since it uses less digits than its factorization.

22231471012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557867757 (or 5557867755 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 22231471012 its reverse (21017413222), we get a palindrome (43248884234).

The spelling of 22231471012 in words is "twenty-two billion, two hundred thirty-one million, four hundred seventy-one thousand, twelve".