2212120220 has 48 divisors (see below), whose sum is σ = 5102576640. Its totient is φ = 801827136.

The previous prime is 2212120219. The next prime is 2212120237. The reversal of 2212120220 is 220212122.

It is a junction number, because it is equal to n+sod(n) for n = 2212120195 and 2212120204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117812 + ... + 135291.

It is an arithmetic number, because the mean of its divisors is an integer number (106303680).

Almost surely, 2^2212120220 is an apocalyptic number.

2212120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212120220 is an abundant number, since it is smaller than the sum of its proper divisors (2890456420).

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

2212120220 is a wasteful number, since it uses less digits than its factorization.

2212120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253154 (or 253152 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2212120220 is about 47033.1821164590. The cubic root of 2212120220 is about 1302.9754763638.

Adding to 2212120220 its reverse (220212122), we get a palindrome (2432332342).

The spelling of 2212120220 in words is "two billion, two hundred twelve million, one hundred twenty thousand, two hundred twenty".