2212122220 has 48 divisors (see below), whose sum is σ = 5791742208. Its totient is φ = 689492160.

The previous prime is 2212122197. The next prime is 2212122251. The reversal of 2212122220 is 222212122.

2212122220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2212122194 and 2212122203.

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, 716682 + ... + 719761.

It is an arithmetic number, because the mean of its divisors is an integer number (120661296).

Almost surely, 2^2212122220 is an apocalyptic number.

2212122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212122220 is an abundant number, since it is smaller than the sum of its proper divisors (3579619988).

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

2212122220 is a wasteful number, since it uses less digits than its factorization.

2212122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436470 (or 1436468 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2212122220 is about 47033.2033780392. The cubic root of 2212122220 is about 1302.9758690414.

Adding to 2212122220 its reverse (222212122), we get a palindrome (2434334342).

The spelling of 2212122220 in words is "two billion, two hundred twelve million, one hundred twenty-two thousand, two hundred twenty".