12211031432 has 8 divisors (see below), whose sum is σ = 22895683950. Its totient is φ = 6105515712.

The previous prime is 12211031381. The next prime is 12211031477. The reversal of 12211031432 is 23413011221.

It can be written as a sum of positive squares in only one way, i.e., 6278026756 + 5933004676 = 79234^2 + 77026^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 763189457 + ... + 763189472.

Almost surely, 2^12211031432 is an apocalyptic number.

It is an amenable number.

12211031432 is a deficient number, since it is larger than the sum of its proper divisors (10684652518).

12211031432 is a wasteful number, since it uses less digits than its factorization.

12211031432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526378935 (or 1526378931 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12211031432 its reverse (23413011221), we get a palindrome (35624042653).

The spelling of 12211031432 in words is "twelve billion, two hundred eleven million, thirty-one thousand, four hundred thirty-two".