21410231243 has 2 divisors, whose sum is σ = 21410231244. Its totient is φ = 21410231242.

The previous prime is 21410231209. The next prime is 21410231257. The reversal of 21410231243 is 34213201412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21410231243 - 2³⁰ = 20336489419 is a prime.

It is not a weakly prime, because it can be changed into another prime (21410234243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10705115621 + 10705115622.

It is an arithmetic number, because the mean of its divisors is an integer number (10705115622).

Almost surely, 2^21410231243 is an apocalyptic number.

21410231243 is a deficient number, since it is larger than the sum of its proper divisors (1).

21410231243 is an equidigital number, since it uses as much as digits as its factorization.

21410231243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21410231243 its reverse (34213201412), we get a palindrome (55623432655).

The spelling of 21410231243 in words is "twenty-one billion, four hundred ten million, two hundred thirty-one thousand, two hundred forty-three".