21002222202223 has 8 divisors (see below), whose sum is σ = 21340514840400. Its totient is φ = 20666603814528.

The previous prime is 21002222202193. The next prime is 21002222202257. The reversal of 21002222202223 is 32220222220012.

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

It is a cyclic number.

It is not a de Polignac number, because 21002222202223 - 2⁹ = 21002222201711 is a prime.

It is a super-2 number, since 2×21002222202223² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21002222202194 and 21002222202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002222202823) 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, 668546788 + ... + 668578201.

It is an arithmetic number, because the mean of its divisors is an integer number (2667564355050).

Almost surely, 2^{21002222202223} is an apocalyptic number.

21002222202223 is a deficient number, since it is larger than the sum of its proper divisors (338292638177).

21002222202223 is a wasteful number, since it uses less digits than its factorization.

21002222202223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337125241.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 21002222202223 its reverse (32220222220012), we get a palindrome (53222444422235).

The spelling of 21002222202223 in words is "twenty-one trillion, two billion, two hundred twenty-two million, two hundred two thousand, two hundred twenty-three".