21112376336 has 10 divisors (see below), whose sum is σ = 40905229182. Its totient is φ = 10556188160.

The previous prime is 21112376297. The next prime is 21112376353. The reversal of 21112376336 is 63367321112.

It can be written as a sum of positive squares in only one way, i.e., 20851360000 + 261016336 = 144400^2 + 16156^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21112376296 and 21112376305.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659761745 + ... + 659761776.

Almost surely, 2^21112376336 is an apocalyptic number.

It is an amenable number.

21112376336 is a deficient number, since it is larger than the sum of its proper divisors (19792852846).

21112376336 is a wasteful number, since it uses less digits than its factorization.

21112376336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319523529 (or 1319523523 counting only the distinct ones).

The product of its digits is 27216, while the sum is 35.

Adding to 21112376336 its reverse (63367321112), we get a palindrome (84479697448).

The spelling of 21112376336 in words is "twenty-one billion, one hundred twelve million, three hundred seventy-six thousand, three hundred thirty-six".