21213332320202 has 32 divisors (see below), whose sum is σ = 35910618382080. Its totient is φ = 9309692499520.

The previous prime is 21213332320181. The next prime is 21213332320249. The reversal of 21213332320202 is 20202323331212.

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, 26337368 + ... + 27130860.

It is an arithmetic number, because the mean of its divisors is an integer number (1122206824440).

Almost surely, 2^{21213332320202} is an apocalyptic number.

21213332320202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21213332320202 is a deficient number, since it is larger than the sum of its proper divisors (14697286061878).

21213332320202 is a wasteful number, since it uses less digits than its factorization.

21213332320202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835438.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21213332320202 its reverse (20202323331212), we get a palindrome (41415655651414).

The spelling of 21213332320202 in words is "twenty-one trillion, two hundred thirteen billion, three hundred thirty-two million, three hundred twenty thousand, two hundred two".