2124223220 has 96 divisors (see below), whose sum is σ = 5240809728. Its totient is φ = 708083712.

The previous prime is 2124223217. The next prime is 2124223247. The reversal of 2124223220 is 223224212.

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 = 2124223192 and 2124223201.

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, 1546454 + ... + 1547826.

It is an arithmetic number, because the mean of its divisors is an integer number (54591768).

Almost surely, 2^2124223220 is an apocalyptic number.

2124223220 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 2124223220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2620404864).

2124223220 is an abundant number, since it is smaller than the sum of its proper divisors (3116586508).

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

2124223220 is a wasteful number, since it uses less digits than its factorization.

2124223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689 (or 1687 counting only the distinct ones).

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

The square root of 2124223220 is about 46089.2961543133. The cubic root of 2124223220 is about 1285.4841236795.

Adding to 2124223220 its reverse (223224212), we get a palindrome (2347447432).

The spelling of 2124223220 in words is "two billion, one hundred twenty-four million, two hundred twenty-three thousand, two hundred twenty".