21550322252302 has 8 divisors (see below), whose sum is σ = 32639323023216. Its totient is φ = 10670547911232.

The previous prime is 21550322252293. The next prime is 21550322252339. The reversal of 21550322252302 is 20325222305512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21550322252302² (a number of 27 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 52306607203 + ... + 52306607614.

It is an arithmetic number, because the mean of its divisors is an integer number (4079915377902).

Almost surely, 2^{21550322252302} is an apocalyptic number.

21550322252302 is a deficient number, since it is larger than the sum of its proper divisors (11089000770914).

21550322252302 is a wasteful number, since it uses less digits than its factorization.

21550322252302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104613214922.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 21550322252302 its reverse (20325222305512), we get a palindrome (41875544557814).

The spelling of 21550322252302 in words is "twenty-one trillion, five hundred fifty billion, three hundred twenty-two million, two hundred fifty-two thousand, three hundred two".