21114414044 has 24 divisors (see below), whose sum is σ = 37743525120. Its totient is φ = 10330634736.

The previous prime is 21114414019. The next prime is 21114414053. The reversal of 21114414044 is 44041441112.

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 in 7 ways as a sum of consecutive naturals, for example, 1924727 + ... + 1935665.

It is an arithmetic number, because the mean of its divisors is an integer number (1572646880).

Almost surely, 2^21114414044 is an apocalyptic number.

It is an amenable number.

21114414044 is a deficient number, since it is larger than the sum of its proper divisors (16629111076).

21114414044 is a wasteful number, since it uses less digits than its factorization.

21114414044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21257 (or 21255 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 21114414044 its reverse (44041441112), we get a palindrome (65155855156).

The spelling of 21114414044 in words is "twenty-one billion, one hundred fourteen million, four hundred fourteen thousand, forty-four".