2220122220 has 24 divisors (see below), whose sum is σ = 6216342384. Its totient is φ = 592032576.

The previous prime is 2220122213. The next prime is 2220122249. The reversal of 2220122220 is 222210222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2220122220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18500959 + ... + 18501078.

It is an arithmetic number, because the mean of its divisors is an integer number (259014266).

Almost surely, 2^2220122220 is an apocalyptic number.

2220122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220122220 is an abundant number, since it is smaller than the sum of its proper divisors (3996220164).

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

2220122220 is a wasteful number, since it uses less digits than its factorization.

2220122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37002049 (or 37002047 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2220122220 is about 47118.1729272263. The cubic root of 2220122220 is about 1304.5446892998.

Adding to 2220122220 its reverse (222210222), we get a palindrome (2442332442).

The spelling of 2220122220 in words is "two billion, two hundred twenty million, one hundred twenty-two thousand, two hundred twenty".