21113150044 has 24 divisors (see below), whose sum is σ = 42229389440. Its totient is φ = 9047830896.

The previous prime is 21113149997. The next prime is 21113150063. The reversal of 21113150044 is 44005131112.

It is a junction number, because it is equal to n+sod(n) for n = 21113149997 and 21113150024.

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, 684319 + ... + 714505.

Almost surely, 2^21113150044 is an apocalyptic number.

It is an amenable number.

21113150044 is an abundant number, since it is smaller than the sum of its proper divisors (21116239396).

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

21113150044 is a wasteful number, since it uses less digits than its factorization.

21113150044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55177 (or 55175 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 21113150044 its reverse (44005131112), we get a palindrome (65118281156).

The spelling of 21113150044 in words is "twenty-one billion, one hundred thirteen million, one hundred fifty thousand, forty-four".