21314423205029 has 2 divisors, whose sum is σ = 21314423205030. Its totient is φ = 21314423205028.

The previous prime is 21314423205011. The next prime is 21314423205143. The reversal of 21314423205029 is 92050232441312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11007100113025 + 10307323092004 = 3317695^2 + 3210502^2 .

It is a cyclic number.

It is not a de Polignac number, because 21314423205029 - 2²⁴ = 21314406427813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21314423204983 and 21314423205001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21314423202029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10657211602514 + 10657211602515.

It is an arithmetic number, because the mean of its divisors is an integer number (10657211602515).

Almost surely, 2^{21314423205029} is an apocalyptic number.

It is an amenable number.

21314423205029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21314423205029 is an equidigital number, since it uses as much as digits as its factorization.

21314423205029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 21314423205029 in words is "twenty-one trillion, three hundred fourteen billion, four hundred twenty-three million, two hundred five thousand, twenty-nine".