2120223220 has 12 divisors (see below), whose sum is σ = 4452468804. Its totient is φ = 848089280.

The previous prime is 2120223211. The next prime is 2120223239. The reversal of 2120223220 is 223220212.

It can be written as a sum of positive squares in 2 ways, for example, as 1391439204 + 728784016 = 37302^2 + 26996^2 .

It is a super-3 number, since 3×2120223220³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2120223194 and 2120223203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53005561 + ... + 53005600.

It is an arithmetic number, because the mean of its divisors is an integer number (371039067).

Almost surely, 2^2120223220 is an apocalyptic number.

2120223220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120223220 is an abundant number, since it is smaller than the sum of its proper divisors (2332245584).

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

2120223220 is a wasteful number, since it uses less digits than its factorization.

2120223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106011170 (or 106011168 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2120223220 is about 46045.8816833818. The cubic root of 2120223220 is about 1284.6767434695.

Adding to 2120223220 its reverse (223220212), we get a palindrome (2343443432).

The spelling of 2120223220 in words is "two billion, one hundred twenty million, two hundred twenty-three thousand, two hundred twenty".