21225343150545 has 8 divisors (see below), whose sum is σ = 33960549040896. Its totient is φ = 11320183013616.

The previous prime is 21225343150507. The next prime is 21225343150567. The reversal of 21225343150545 is 54505134352212.

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

It is not a de Polignac number, because 21225343150545 - 2⁴¹ = 19026319894993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21225343150497 and 21225343150506.

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, 707511438337 + ... + 707511438366.

It is an arithmetic number, because the mean of its divisors is an integer number (4245068630112).

Almost surely, 2^{21225343150545} is an apocalyptic number.

It is an amenable number.

21225343150545 is a deficient number, since it is larger than the sum of its proper divisors (12735205890351).

21225343150545 is a wasteful number, since it uses less digits than its factorization.

21225343150545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415022876711.

The product of its (nonzero) digits is 720000, while the sum is 42.

The spelling of 21225343150545 in words is "twenty-one trillion, two hundred twenty-five billion, three hundred forty-three million, one hundred fifty thousand, five hundred forty-five".