21203000200223 has 4 divisors (see below), whose sum is σ = 21203639243688. Its totient is φ = 21202361156760.

The previous prime is 21203000200189. The next prime is 21203000200241. The reversal of 21203000200223 is 32200200030212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21203000200223 - 2¹⁴ = 21203000183839 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 (21203000200273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319471961 + ... + 319538322.

It is an arithmetic number, because the mean of its divisors is an integer number (5300909810922).

Almost surely, 2^{21203000200223} is an apocalyptic number.

21203000200223 is a deficient number, since it is larger than the sum of its proper divisors (639043465).

21203000200223 is an equidigital number, since it uses as much as digits as its factorization.

21203000200223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639043464.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21203000200223 its reverse (32200200030212), we get a palindrome (53403200230435).

The spelling of 21203000200223 in words is "twenty-one trillion, two hundred three billion, two hundred thousand, two hundred twenty-three".