21203301041 has 4 divisors (see below), whose sum is σ = 22834324212. Its totient is φ = 19572277872.

The previous prime is 21203301037. The next prime is 21203301059. The reversal of 21203301041 is 14010330212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11067040000 + 10136261041 = 105200^2 + 100679^2 .

It is a cyclic number.

It is not a de Polignac number, because 21203301041 - 2² = 21203301037 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21203301011) 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 3 ways as a sum of consecutive naturals, for example, 815511566 + ... + 815511591.

It is an arithmetic number, because the mean of its divisors is an integer number (5708581053).

Almost surely, 2^21203301041 is an apocalyptic number.

It is an amenable number.

21203301041 is a deficient number, since it is larger than the sum of its proper divisors (1631023171).

21203301041 is a wasteful number, since it uses less digits than its factorization.

21203301041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631023170.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21203301041 its reverse (14010330212), we get a palindrome (35213631253).

The spelling of 21203301041 in words is "twenty-one billion, two hundred three million, three hundred one thousand, forty-one".