21124545283 has 2 divisors, whose sum is σ = 21124545284. Its totient is φ = 21124545282.

The previous prime is 21124545193. The next prime is 21124545289. The reversal of 21124545283 is 38254542112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21124545283 - 2²¹ = 21122448131 is a prime.

It is not a weakly prime, because it can be changed into another prime (21124545289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10562272641 + 10562272642.

It is an arithmetic number, because the mean of its divisors is an integer number (10562272642).

Almost surely, 2^21124545283 is an apocalyptic number.

21124545283 is a deficient number, since it is larger than the sum of its proper divisors (1).

21124545283 is an equidigital number, since it uses as much as digits as its factorization.

21124545283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76800, while the sum is 37.

The spelling of 21124545283 in words is "twenty-one billion, one hundred twenty-four million, five hundred forty-five thousand, two hundred eighty-three".