21321323302302 has 16 divisors (see below), whose sum is σ = 47380718449680. Its totient is φ = 7107107767416.

The previous prime is 21321323302249. The next prime is 21321323302319. The reversal of 21321323302302 is 20320332312312.

21321323302302 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 1 + 323 + 30 + 2 + 302 = 666.

It is a super-2 number, since 2×21321323302302² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 197419660153 + ... + 197419660260.

It is an arithmetic number, because the mean of its divisors is an integer number (2961294903105).

Almost surely, 2^{21321323302302} is an apocalyptic number.

21321323302302 is an abundant number, since it is smaller than the sum of its proper divisors (26059395147378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21321323302302 is a wasteful number, since it uses less digits than its factorization.

21321323302302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394839320424 (or 394839320418 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 21321323302302 its reverse (20320332312312), we get a palindrome (41641655614614).

The spelling of 21321323302302 in words is "twenty-one trillion, three hundred twenty-one billion, three hundred twenty-three million, three hundred two thousand, three hundred two".