22102223420 has 96 divisors (see below), whose sum is σ = 48364646400. Its totient is φ = 8477913600.

The previous prime is 22102223411. The next prime is 22102223449. The reversal of 22102223420 is 2432220122.

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 = 22102223392 and 22102223401.

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, 17554751 + ... + 17556009.

It is an arithmetic number, because the mean of its divisors is an integer number (503798400).

Almost surely, 2^22102223420 is an apocalyptic number.

22102223420 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 22102223420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24182323200).

22102223420 is an abundant number, since it is smaller than the sum of its proper divisors (26262422980).

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

22102223420 is a wasteful number, since it uses less digits than its factorization.

22102223420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659 (or 1657 counting only the distinct ones).

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

Adding to 22102223420 its reverse (2432220122), we get a palindrome (24534443542).

It can be divided in two parts, 221022 and 23420, that added together give a palindrome (244442).

The spelling of 22102223420 in words is "twenty-two billion, one hundred two million, two hundred twenty-three thousand, four hundred twenty".