22223210420 has 96 divisors (see below), whose sum is σ = 49518943488. Its totient is φ = 8360174592.

The previous prime is 22223210413. The next prime is 22223210447. The reversal of 22223210420 is 2401232222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22223210392 and 22223210401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13330427 + ... + 13332093.

It is an arithmetic number, because the mean of its divisors is an integer number (515822328).

Almost surely, 2^22223210420 is an apocalyptic number.

22223210420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22223210420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24759471744).

22223210420 is an abundant number, since it is smaller than the sum of its proper divisors (27295733068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22223210420 is a wasteful number, since it uses less digits than its factorization.

22223210420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169 (or 2167 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 22223210420 its reverse (2401232222), we get a palindrome (24624442642).

The spelling of 22223210420 in words is "twenty-two billion, two hundred twenty-three million, two hundred ten thousand, four hundred twenty".