1222022120 has 64 divisors (see below), whose sum is σ = 3004171200. Its totient is φ = 443681280.

The previous prime is 1222022119. The next prime is 1222022141. The reversal of 1222022120 is 212202221.

It is a junction number, because it is equal to n+sod(n) for n = 1222022095 and 1222022104.

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, 344516 + ... + 348044.

It is an arithmetic number, because the mean of its divisors is an integer number (46940175).

Almost surely, 2^1222022120 is an apocalyptic number.

1222022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222022120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1502085600).

1222022120 is an abundant number, since it is smaller than the sum of its proper divisors (1782149080).

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

1222022120 is a wasteful number, since it uses less digits than its factorization.

1222022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338 (or 4334 counting only the distinct ones).

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

The square root of 1222022120 is about 34957.4329721162. The cubic root of 1222022120 is about 1069.1197582007.

Adding to 1222022120 its reverse (212202221), we get a palindrome (1434224341).

The spelling of 1222022120 in words is "one billion, two hundred twenty-two million, twenty-two thousand, one hundred twenty".