21423312333029 has 2 divisors, whose sum is σ = 21423312333030. Its totient is φ = 21423312333028.

The previous prime is 21423312332993. The next prime is 21423312333053. The reversal of 21423312333029 is 92033321332412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11199798492100 + 10223513840929 = 3346610^2 + 3197423^2 .

It is a cyclic number.

It is not a de Polignac number, because 21423312333029 - 2²⁸ = 21423043897573 is a prime.

It is a super-2 number, since 2×21423312333029² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21423312332983 and 21423312333001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21423312333079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10711656166514 + 10711656166515.

It is an arithmetic number, because the mean of its divisors is an integer number (10711656166515).

Almost surely, 2^{21423312333029} is an apocalyptic number.

It is an amenable number.

21423312333029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21423312333029 is an equidigital number, since it uses as much as digits as its factorization.

21423312333029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 38.

The spelling of 21423312333029 in words is "twenty-one trillion, four hundred twenty-three billion, three hundred twelve million, three hundred thirty-three thousand, twenty-nine".