1220222222 has 16 divisors (see below), whose sum is σ = 1849012272. Its totient is φ = 603894720.

The previous prime is 1220222221. The next prime is 1220222249. The reversal of 1220222222 is 2222220221.

1220222222 is a modest number, since divided by 22222 gives 12202 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1220222222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220222221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425072 + ... + 427932.

It is an arithmetic number, because the mean of its divisors is an integer number (115563267).

Almost surely, 2^1220222222 is an apocalyptic number.

1220222222 is a deficient number, since it is larger than the sum of its proper divisors (628790050).

1220222222 is a wasteful number, since it uses less digits than its factorization.

1220222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4963.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1220222222 is about 34931.6793469767. The cubic root of 1220222222 is about 1068.5946034817.

Adding to 1220222222 its reverse (2222220221), we get a palindrome (3442442443).

The spelling of 1220222222 in words is "one billion, two hundred twenty million, two hundred twenty-two thousand, two hundred twenty-two".