21342452210320 has 40 divisors (see below), whose sum is σ = 49622558863680. Its totient is φ = 8536747340160.

The previous prime is 21342452210279. The next prime is 21342452210333. The reversal of 21342452210320 is 2301225424312.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 691636 + ... + 6569875.

It is an arithmetic number, because the mean of its divisors is an integer number (1240563971592).

Almost surely, 2^{21342452210320} is an apocalyptic number.

21342452210320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21342452210320 is an abundant number, since it is smaller than the sum of its proper divisors (28280106653360).

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

21342452210320 is a wasteful number, since it uses less digits than its factorization.

21342452210320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7298263 (or 7298257 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 21342452210320 its reverse (2301225424312), we get a palindrome (23643677634632).

The spelling of 21342452210320 in words is "twenty-one trillion, three hundred forty-two billion, four hundred fifty-two million, two hundred ten thousand, three hundred twenty".