21041320112 has 20 divisors (see below), whose sum is σ = 40978794600. Its totient is φ = 10466147328.

The previous prime is 21041320093. The next prime is 21041320117. The reversal of 21041320112 is 21102314012.

It is not an unprimeable number, because it can be changed into a prime (21041320117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3403862 + ... + 3410037.

It is an arithmetic number, because the mean of its divisors is an integer number (2048939730).

Almost surely, 2^21041320112 is an apocalyptic number.

It is an amenable number.

21041320112 is a deficient number, since it is larger than the sum of its proper divisors (19937474488).

21041320112 is a wasteful number, since it uses less digits than its factorization.

21041320112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6814100 (or 6814094 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21041320112 its reverse (21102314012), we get a palindrome (42143634124).

The spelling of 21041320112 in words is "twenty-one billion, forty-one million, three hundred twenty thousand, one hundred twelve".