21234043283 has 2 divisors, whose sum is σ = 21234043284. Its totient is φ = 21234043282.

The previous prime is 21234043249. The next prime is 21234043357. The reversal of 21234043283 is 38234043212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21234043283 - 2⁶ = 21234043219 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21234043483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10617021641 + 10617021642.

It is an arithmetic number, because the mean of its divisors is an integer number (10617021642).

Almost surely, 2^21234043283 is an apocalyptic number.

21234043283 is a deficient number, since it is larger than the sum of its proper divisors (1).

21234043283 is an equidigital number, since it uses as much as digits as its factorization.

21234043283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21234043283 its reverse (38234043212), we get a palindrome (59468086495).

The spelling of 21234043283 in words is "twenty-one billion, two hundred thirty-four million, forty-three thousand, two hundred eighty-three".