1220120223 has 32 divisors (see below), whose sum is σ = 1883481600. Its totient is φ = 688158720.

The previous prime is 1220120221. The next prime is 1220120249. The reversal of 1220120223 is 3220210221.

It is a happy number.

It is not a de Polignac number, because 1220120223 - 2¹ = 1220120221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220120221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1162603 + ... + 1163651.

It is an arithmetic number, because the mean of its divisors is an integer number (58858800).

Almost surely, 2^1220120223 is an apocalyptic number.

1220120223 is a deficient number, since it is larger than the sum of its proper divisors (663361377).

1220120223 is a wasteful number, since it uses less digits than its factorization.

1220120223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1220120223 is about 34930.2193379887. The cubic root of 1220120223 is about 1068.5648278621.

Adding to 1220120223 its reverse (3220210221), we get a palindrome (4440330444).

The spelling of 1220120223 in words is "one billion, two hundred twenty million, one hundred twenty thousand, two hundred twenty-three".