21121241133 has 8 divisors (see below), whose sum is σ = 29818222848. Its totient is φ = 13252543424.

The previous prime is 21121241107. The next prime is 21121241137. The reversal of 21121241133 is 33114212112.

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 21121241133 - 2⁵ = 21121241101 is a prime.

It is a super-2 number, since 2×21121241133² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21121241137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207070941 + ... + 207071042.

It is an arithmetic number, because the mean of its divisors is an integer number (3727277856).

Almost surely, 2^21121241133 is an apocalyptic number.

It is an amenable number.

21121241133 is a deficient number, since it is larger than the sum of its proper divisors (8696981715).

21121241133 is a wasteful number, since it uses less digits than its factorization.

21121241133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414142003.

The product of its digits is 288, while the sum is 21.

Adding to 21121241133 its reverse (33114212112), we get a palindrome (54235453245).

The spelling of 21121241133 in words is "twenty-one billion, one hundred twenty-one million, two hundred forty-one thousand, one hundred thirty-three".