21113140112 has 10 divisors (see below), whose sum is σ = 40906708998. Its totient is φ = 10556570048.

The previous prime is 21113140093. The next prime is 21113140151. The reversal of 21113140112 is 21104131112.

It can be written as a sum of positive squares in only one way, i.e., 12842328976 + 8270811136 = 113324^2 + 90944^2 .

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, 659785613 + ... + 659785644.

Almost surely, 2^21113140112 is an apocalyptic number.

It is an amenable number.

21113140112 is a deficient number, since it is larger than the sum of its proper divisors (19793568886).

21113140112 is a wasteful number, since it uses less digits than its factorization.

21113140112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319571265 (or 1319571259 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21113140112 its reverse (21104131112), we get a palindrome (42217271224).

The spelling of 21113140112 in words is "twenty-one billion, one hundred thirteen million, one hundred forty thousand, one hundred twelve".