21033240301 has 4 divisors (see below), whose sum is σ = 21546246204. Its totient is φ = 20520234400.

The previous prime is 21033240299. The next prime is 21033240317. The reversal of 21033240301 is 10304233012.

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 2869209225 + 18164031076 = 53565^2 + 134774^2 .

It is a cyclic number.

It is not a de Polignac number, because 21033240301 - 2¹ = 21033240299 is a prime.

It is a super-2 number, since 2×21033240301² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033240101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256502890 + ... + 256502971.

It is an arithmetic number, because the mean of its divisors is an integer number (5386561551).

Almost surely, 2^21033240301 is an apocalyptic number.

It is an amenable number.

21033240301 is a deficient number, since it is larger than the sum of its proper divisors (513005903).

21033240301 is an equidigital number, since it uses as much as digits as its factorization.

21033240301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513005902.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21033240301 its reverse (10304233012), we get a palindrome (31337473313).

The spelling of 21033240301 in words is "twenty-one billion, thirty-three million, two hundred forty thousand, three hundred one".