21242144314 has 16 divisors (see below), whose sum is σ = 32672183400. Its totient is φ = 10354498560.

The previous prime is 21242144303. The next prime is 21242144327. The reversal of 21242144314 is 41344124212.

It can be written as a sum of positive squares in 4 ways, for example, as 12965693689 + 8276450625 = 113867^2 + 90975^2 .

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, 756639 + ... + 784210.

Almost surely, 2^21242144314 is an apocalyptic number.

21242144314 is a deficient number, since it is larger than the sum of its proper divisors (11430039086).

21242144314 is a wasteful number, since it uses less digits than its factorization.

21242144314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541025.

The product of its digits is 6144, while the sum is 28.

Adding to 21242144314 its reverse (41344124212), we get a palindrome (62586268526).

The spelling of 21242144314 in words is "twenty-one billion, two hundred forty-two million, one hundred forty-four thousand, three hundred fourteen".