21044124110 has 16 divisors (see below), whose sum is σ = 37886513616. Its totient is φ = 8416074048.

The previous prime is 21044124109. The next prime is 21044124121. The reversal of 21044124110 is 1142144012.

It is a super-5 number, since 5×21044124110⁵ (a number of 53 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140072 + ... + 248411.

It is an arithmetic number, because the mean of its divisors is an integer number (2367907101).

Almost surely, 2^21044124110 is an apocalyptic number.

21044124110 is a deficient number, since it is larger than the sum of its proper divisors (16842389506).

21044124110 is a wasteful number, since it uses less digits than its factorization.

21044124110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393907.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21044124110 its reverse (1142144012), we get a palindrome (22186268122).

It can be divided in two parts, 2104 and 4124110, that added together give a palindrome (4126214).

The spelling of 21044124110 in words is "twenty-one billion, forty-four million, one hundred twenty-four thousand, one hundred ten".