21442055221325 has 12 divisors (see below), whose sum is σ = 27987524710560. Its totient is φ = 16250820798960.

The previous prime is 21442055221319. The next prime is 21442055221417. The reversal of 21442055221325 is 52312255024412.

It is not a de Polignac number, because 21442055221325 - 2³⁰ = 21440981479501 is a prime.

It is a super-2 number, since 2×21442055221325² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22570583969 + ... + 22570584918.

It is an arithmetic number, because the mean of its divisors is an integer number (2332293725880).

Almost surely, 2^{21442055221325} is an apocalyptic number.

21442055221325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21442055221325 is a deficient number, since it is larger than the sum of its proper divisors (6545469489235).

21442055221325 is a wasteful number, since it uses less digits than its factorization.

21442055221325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45141168916 (or 45141168911 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 21442055221325 in words is "twenty-one trillion, four hundred forty-two billion, fifty-five million, two hundred twenty-one thousand, three hundred twenty-five".