21241122330133 has 4 divisors (see below), whose sum is σ = 21241143001260. Its totient is φ = 21241101659008.

The previous prime is 21241122330083. The next prime is 21241122330143. The reversal of 21241122330133 is 33103322114212.

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 8152949383569 + 13088172946564 = 2855337^2 + 3617758^2 .

It is a cyclic number.

It is not a de Polignac number, because 21241122330133 - 2¹³ = 21241122321941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241122330143) 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, 8708860 + ... + 10877797.

It is an arithmetic number, because the mean of its divisors is an integer number (5310285750315).

Almost surely, 2^{21241122330133} is an apocalyptic number.

It is an amenable number.

21241122330133 is a deficient number, since it is larger than the sum of its proper divisors (20671127).

21241122330133 is a wasteful number, since it uses less digits than its factorization.

21241122330133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20671126.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 21241122330133 its reverse (33103322114212), we get a palindrome (54344444444345).

The spelling of 21241122330133 in words is "twenty-one trillion, two hundred forty-one billion, one hundred twenty-two million, three hundred thirty thousand, one hundred thirty-three".