21434222155459 has 2 divisors, whose sum is σ = 21434222155460. Its totient is φ = 21434222155458.

The previous prime is 21434222155457. The next prime is 21434222155517. The reversal of 21434222155459 is 95455122243412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21434222155459 - 2¹ = 21434222155457 is a prime.

It is a super-5 number, since 5×21434222155459⁵ (a number of 68 digits) contains 55555 as substring.

Together with 21434222155457, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21434222155457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10717111077729 + 10717111077730.

It is an arithmetic number, because the mean of its divisors is an integer number (10717111077730).

Almost surely, 2^{21434222155459} is an apocalyptic number.

21434222155459 is a deficient number, since it is larger than the sum of its proper divisors (1).

21434222155459 is an equidigital number, since it uses as much as digits as its factorization.

21434222155459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456000, while the sum is 49.

The spelling of 21434222155459 in words is "twenty-one trillion, four hundred thirty-four billion, two hundred twenty-two million, one hundred fifty-five thousand, four hundred fifty-nine".