21241435267 has 8 divisors (see below), whose sum is σ = 23433328800. Its totient is φ = 19129247040.

The previous prime is 21241435261. The next prime is 21241435331. The reversal of 21241435267 is 76253414212.

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 21241435267 - 2¹⁹ = 21240910979 is a prime.

It is a super-2 number, since 2×21241435267² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21241435261) 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, 19925767 + ... + 19926832.

It is an arithmetic number, because the mean of its divisors is an integer number (2929166100).

Almost surely, 2^21241435267 is an apocalyptic number.

21241435267 is a deficient number, since it is larger than the sum of its proper divisors (2191893533).

21241435267 is a wasteful number, since it uses less digits than its factorization.

21241435267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39852653.

The product of its digits is 80640, while the sum is 37.

Adding to 21241435267 its reverse (76253414212), we get a palindrome (97494849479).

The spelling of 21241435267 in words is "twenty-one billion, two hundred forty-one million, four hundred thirty-five thousand, two hundred sixty-seven".