21434301241 has 2 divisors, whose sum is σ = 21434301242. Its totient is φ = 21434301240.

The previous prime is 21434301227. The next prime is 21434301277. The reversal of 21434301241 is 14210343412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12860467216 + 8573834025 = 113404^2 + 92595^2 .

It is a cyclic number.

It is not a de Polignac number, because 21434301241 - 2⁵ = 21434301209 is a prime.

It is not a weakly prime, because it can be changed into another prime (21434301221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10717150620 + 10717150621.

It is an arithmetic number, because the mean of its divisors is an integer number (10717150621).

Almost surely, 2^21434301241 is an apocalyptic number.

It is an amenable number.

21434301241 is a deficient number, since it is larger than the sum of its proper divisors (1).

21434301241 is an equidigital number, since it uses as much as digits as its factorization.

21434301241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21434301241 its reverse (14210343412), we get a palindrome (35644644653).

The spelling of 21434301241 in words is "twenty-one billion, four hundred thirty-four million, three hundred one thousand, two hundred forty-one".