21213303301200 has 120 divisors (see below), whose sum is σ = 67954307342400. Its totient is φ = 5656795489280.

The previous prime is 21213303301129. The next prime is 21213303301217. The reversal of 21213303301200 is 210330331212.

It is a tau number, because it is divible by the number of its divisors (120).

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 23 ways as a sum of consecutive naturals, for example, 146662516 + ... + 146807084.

It is an arithmetic number, because the mean of its divisors is an integer number (566285894520).

Almost surely, 2^{21213303301200} is an apocalyptic number.

21213303301200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21213303301200 is an abundant number, since it is smaller than the sum of its proper divisors (46741004041200).

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

21213303301200 is a wasteful number, since it uses less digits than its factorization.

21213303301200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266869 (or 266858 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21213303301200 its reverse (210330331212), we get a palindrome (21423633632412).

The spelling of 21213303301200 in words is "twenty-one trillion, two hundred thirteen billion, three hundred three million, three hundred one thousand, two hundred".