21202223022203 has 4 divisors (see below), whose sum is σ = 21354757000920. Its totient is φ = 21049689043488.

The previous prime is 21202223022193. The next prime is 21202223022217. The reversal of 21202223022203 is 30222032220212.

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 21202223022203 - 2⁶ = 21202223022139 is a prime.

It is a super-2 number, since 2×21202223022203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21202223022223) 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, 76266989150 + ... + 76266989427.

It is an arithmetic number, because the mean of its divisors is an integer number (5338689250230).

Almost surely, 2^{21202223022203} is an apocalyptic number.

21202223022203 is a deficient number, since it is larger than the sum of its proper divisors (152533978717).

21202223022203 is a wasteful number, since it uses less digits than its factorization.

21202223022203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152533978716.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 21202223022203 its reverse (30222032220212), we get a palindrome (51424255242415).

The spelling of 21202223022203 in words is "twenty-one trillion, two hundred two billion, two hundred twenty-three million, twenty-two thousand, two hundred three".