21104334112 has 24 divisors (see below), whose sum is σ = 43355644416. Its totient is φ = 10093376832.

The previous prime is 21104334077. The next prime is 21104334131. The reversal of 21104334112 is 21143340112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14336448 + ... + 14337919.

It is an arithmetic number, because the mean of its divisors is an integer number (1806485184).

Almost surely, 2^21104334112 is an apocalyptic number.

It is an amenable number.

21104334112 is an abundant number, since it is smaller than the sum of its proper divisors (22251310304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21104334112 is a wasteful number, since it uses less digits than its factorization.

21104334112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28674400 (or 28674392 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21104334112 its reverse (21143340112), we get a palindrome (42247674224).

It can be divided in two parts, 21104 and 334112, that added together give a square (355216 = 596²).

The spelling of 21104334112 in words is "twenty-one billion, one hundred four million, three hundred thirty-four thousand, one hundred twelve".