21213600063402 has 32 divisors (see below), whose sum is σ = 42482480832000. Its totient is φ = 7061988175088.

The previous prime is 21213600063379. The next prime is 21213600063419. The reversal of 21213600063402 is 20436000631212.

It is a self number, because there is not a number n which added to its sum of digits gives 21213600063402.

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 15 ways as a sum of consecutive naturals, for example, 54283099 + ... + 54672497.

It is an arithmetic number, because the mean of its divisors is an integer number (1327577526000).

Almost surely, 2^{21213600063402} is an apocalyptic number.

21213600063402 is an abundant number, since it is smaller than the sum of its proper divisors (21268880768598).

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

21213600063402 is a wasteful number, since it uses less digits than its factorization.

21213600063402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401210.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 21213600063402 its reverse (20436000631212), we get a palindrome (41649600694614).

The spelling of 21213600063402 in words is "twenty-one trillion, two hundred thirteen billion, six hundred million, sixty-three thousand, four hundred two".