21330132299929 has 2 divisors, whose sum is σ = 21330132299930. Its totient is φ = 21330132299928.

The previous prime is 21330132299923. The next prime is 21330132299981. The reversal of 21330132299929 is 92999223103312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13212846962704 + 8117285337225 = 3634948^2 + 2849085^2 .

It is a cyclic number.

It is not a de Polignac number, because 21330132299929 - 2⁹ = 21330132299417 is a prime.

It is a super-2 number, since 2×21330132299929² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21330132299929.

It is not a weakly prime, because it can be changed into another prime (21330132299923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10665066149964 + 10665066149965.

It is an arithmetic number, because the mean of its divisors is an integer number (10665066149965).

Almost surely, 2^{21330132299929} is an apocalyptic number.

It is an amenable number.

21330132299929 is a deficient number, since it is larger than the sum of its proper divisors (1).

21330132299929 is an equidigital number, since it uses as much as digits as its factorization.

21330132299929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2834352, while the sum is 55.

The spelling of 21330132299929 in words is "twenty-one trillion, three hundred thirty billion, one hundred thirty-two million, two hundred ninety-nine thousand, nine hundred twenty-nine".