21203033200221 has 8 divisors (see below), whose sum is σ = 28530075254560. Its totient is φ = 14005673306352.

The previous prime is 21203033200199. The next prime is 21203033200253. The reversal of 21203033200221 is 12200233030212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21203033200221 - 2¹⁴ = 21203033183837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21203033207221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32420539735 + ... + 32420540388.

It is an arithmetic number, because the mean of its divisors is an integer number (3566259406820).

Almost surely, 2^{21203033200221} is an apocalyptic number.

It is an amenable number.

21203033200221 is a deficient number, since it is larger than the sum of its proper divisors (7327042054339).

21203033200221 is a wasteful number, since it uses less digits than its factorization.

21203033200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64841080235.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21203033200221 its reverse (12200233030212), we get a palindrome (33403266230433).

The spelling of 21203033200221 in words is "twenty-one trillion, two hundred three billion, thirty-three million, two hundred thousand, two hundred twenty-one".