21232332112 has 10 divisors (see below), whose sum is σ = 41137643498. Its totient is φ = 10616166048.

The previous prime is 21232332091. The next prime is 21232332131. The reversal of 21232332112 is 21123323212.

It can be written as a sum of positive squares in only one way, i.e., 21229655616 + 2676496 = 145704^2 + 1636^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663510363 + ... + 663510394.

Almost surely, 2^21232332112 is an apocalyptic number.

It is an amenable number.

21232332112 is a deficient number, since it is larger than the sum of its proper divisors (19905311386).

21232332112 is a wasteful number, since it uses less digits than its factorization.

21232332112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327020765 (or 1327020759 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

Adding to 21232332112 its reverse (21123323212), we get a palindrome (42355655324).

The spelling of 21232332112 in words is "twenty-one billion, two hundred thirty-two million, three hundred thirty-two thousand, one hundred twelve".