22031324212 has 6 divisors (see below), whose sum is σ = 38554817378. Its totient is φ = 11015662104.

The previous prime is 22031324207. The next prime is 22031324219. The reversal of 22031324212 is 21242313022.

It can be written as a sum of positive squares in only one way, i.e., 21713201316 + 318122896 = 147354^2 + 17836^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031324219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2753915523 + ... + 2753915530.

Almost surely, 2^22031324212 is an apocalyptic number.

It is an amenable number.

22031324212 is a deficient number, since it is larger than the sum of its proper divisors (16523493166).

22031324212 is a wasteful number, since it uses less digits than its factorization.

22031324212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507831057 (or 5507831055 counting only the distinct ones).

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

Adding to 22031324212 its reverse (21242313022), we get a palindrome (43273637234).

The spelling of 22031324212 in words is "twenty-two billion, thirty-one million, three hundred twenty-four thousand, two hundred twelve".