21434522341 has 2 divisors, whose sum is σ = 21434522342. Its totient is φ = 21434522340.

The previous prime is 21434522321. The next prime is 21434522357. The reversal of 21434522341 is 14322543412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21360991716 + 73530625 = 146154^2 + 8575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21434522341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21434522321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10717261170 + 10717261171.

It is an arithmetic number, because the mean of its divisors is an integer number (10717261171).

Almost surely, 2^21434522341 is an apocalyptic number.

It is an amenable number.

21434522341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21434522341 is an equidigital number, since it uses as much as digits as its factorization.

21434522341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 31.

The spelling of 21434522341 in words is "twenty-one billion, four hundred thirty-four million, five hundred twenty-two thousand, three hundred forty-one".