21203224041 has 8 divisors (see below), whose sum is σ = 29933963424. Its totient is φ = 13303983680.

The previous prime is 21203224037. The next prime is 21203224099. The reversal of 21203224041 is 14042230212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21203224041 - 2² = 21203224037 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21203223999 and 21203224017.

It is not an unprimeable number, because it can be changed into a prime (21203224001) 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, 207874695 + ... + 207874796.

It is an arithmetic number, because the mean of its divisors is an integer number (3741745428).

Almost surely, 2^21203224041 is an apocalyptic number.

It is an amenable number.

21203224041 is a deficient number, since it is larger than the sum of its proper divisors (8730739383).

21203224041 is a wasteful number, since it uses less digits than its factorization.

21203224041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415749511.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21203224041 its reverse (14042230212), we get a palindrome (35245454253).

The spelling of 21203224041 in words is "twenty-one billion, two hundred three million, two hundred twenty-four thousand, forty-one".