1222276120 has 64 divisors (see below), whose sum is σ = 3090467520. Its totient is φ = 431675904.

The previous prime is 1222276007. The next prime is 1222276193. The reversal of 1222276120 is 216722221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39139 + ... + 63058.

It is an arithmetic number, because the mean of its divisors is an integer number (48288555).

Almost surely, 2^1222276120 is an apocalyptic number.

1222276120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222276120 is an abundant number, since it is smaller than the sum of its proper divisors (1868191400).

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

1222276120 is a wasteful number, since it uses less digits than its factorization.

1222276120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102244 (or 102240 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1222276120 is about 34961.0657732284. The cubic root of 1222276120 is about 1069.1938260378.

Adding to 1222276120 its reverse (216722221), we get a palindrome (1438998341).

The spelling of 1222276120 in words is "one billion, two hundred twenty-two million, two hundred seventy-six thousand, one hundred twenty".