21244350603 has 16 divisors (see below), whose sum is σ = 32374667520. Its totient is φ = 12138757536.

The previous prime is 21244350583. The next prime is 21244350607. The reversal of 21244350603 is 30605344212.

It is not a de Polignac number, because 21244350603 - 2¹³ = 21244342411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21244350607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367828 + ... + 421646.

It is an arithmetic number, because the mean of its divisors is an integer number (2023416720).

Almost surely, 2^21244350603 is an apocalyptic number.

21244350603 is a deficient number, since it is larger than the sum of its proper divisors (11130316917).

21244350603 is a wasteful number, since it uses less digits than its factorization.

21244350603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72626.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 21244350603 its reverse (30605344212), we get a palindrome (51849694815).

The spelling of 21244350603 in words is "twenty-one billion, two hundred forty-four million, three hundred fifty thousand, six hundred three".