21201434403200 has 48 divisors (see below), whose sum is σ = 52374168432060. Its totient is φ = 8480573760000.

The previous prime is 21201434403167. The next prime is 21201434403269. The reversal of 21201434403200 is 230443410212.

It is a self number, because there is not a number n which added to its sum of digits gives 21201434403200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3312720926 + ... + 3312727325.

Almost surely, 2^{21201434403200} is an apocalyptic number.

21201434403200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21201434403200 is an abundant number, since it is smaller than the sum of its proper divisors (31172734028860).

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

21201434403200 is an equidigital number, since it uses as much as digits as its factorization.

21201434403200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6625448275 (or 6625448258 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21201434403200 its reverse (230443410212), we get a palindrome (21431877813412).

The spelling of 21201434403200 in words is "twenty-one trillion, two hundred one billion, four hundred thirty-four million, four hundred three thousand, two hundred".