21241246283 has 4 divisors (see below), whose sum is σ = 21926447808. Its totient is φ = 20556044760.

The previous prime is 21241246267. The next prime is 21241246291. The reversal of 21241246283 is 38264214212.

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

It is a cyclic number.

It is not a de Polignac number, because 21241246283 - 2⁴ = 21241246267 is a prime.

It is a super-2 number, since 2×21241246283² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21241246883) 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 3 ways as a sum of consecutive naturals, for example, 342600716 + ... + 342600777.

It is an arithmetic number, because the mean of its divisors is an integer number (5481611952).

Almost surely, 2^21241246283 is an apocalyptic number.

21241246283 is a deficient number, since it is larger than the sum of its proper divisors (685201525).

21241246283 is an equidigital number, since it uses as much as digits as its factorization.

21241246283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685201524.

The product of its digits is 36864, while the sum is 35.

The spelling of 21241246283 in words is "twenty-one billion, two hundred forty-one million, two hundred forty-six thousand, two hundred eighty-three".