21223223210203 has 4 divisors (see below), whose sum is σ = 24255112240240. Its totient is φ = 18191334180168.

The previous prime is 21223223210201. The next prime is 21223223210239. The reversal of 21223223210203 is 30201232232212.

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 21223223210203 - 2¹ = 21223223210201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21223223210201) 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, 1515944515008 + ... + 1515944515021.

It is an arithmetic number, because the mean of its divisors is an integer number (6063778060060).

Almost surely, 2^{21223223210203} is an apocalyptic number.

21223223210203 is a deficient number, since it is larger than the sum of its proper divisors (3031889030037).

21223223210203 is an equidigital number, since it uses as much as digits as its factorization.

21223223210203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031889030036.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21223223210203 its reverse (30201232232212), we get a palindrome (51424455442415).

The spelling of 21223223210203 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred twenty-three million, two hundred ten thousand, two hundred three".