21124214410 has 16 divisors (see below), whose sum is σ = 40948477416. Its totient is φ = 7799709888.

The previous prime is 21124214393. The next prime is 21124214411. The reversal of 21124214410 is 1441242112.

It can be written as a sum of positive squares in 4 ways, for example, as 14042487001 + 7081727409 = 118501^2 + 84153^2 .

It is not an unprimeable number, because it can be changed into a prime (21124214411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81246849 + ... + 81247108.

Almost surely, 2^21124214410 is an apocalyptic number.

21124214410 is a deficient number, since it is larger than the sum of its proper divisors (19824263006).

21124214410 is a wasteful number, since it uses less digits than its factorization.

21124214410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162493977.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 21124214410 its reverse (1441242112), we get a palindrome (22565456522).

The spelling of 21124214410 in words is "twenty-one billion, one hundred twenty-four million, two hundred fourteen thousand, four hundred ten".