21202103324 has 24 divisors (see below), whose sum is σ = 37604093520. Its totient is φ = 10458440064.

The previous prime is 21202103323. The next prime is 21202103347. The reversal of 21202103324 is 42330120212.

It is a junction number, because it is equal to n+sod(n) for n = 21202103296 and 21202103305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202103323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190352 + ... + 280424.

It is an arithmetic number, because the mean of its divisors is an integer number (1566837230).

Almost surely, 2^21202103324 is an apocalyptic number.

It is an amenable number.

21202103324 is a deficient number, since it is larger than the sum of its proper divisors (16401990196).

21202103324 is a wasteful number, since it uses less digits than its factorization.

21202103324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90869 (or 90867 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21202103324 its reverse (42330120212), we get a palindrome (63532223536).

The spelling of 21202103324 in words is "twenty-one billion, two hundred two million, one hundred three thousand, three hundred twenty-four".