1223120223 has 32 divisors (see below), whose sum is σ = 1953900480. Its totient is φ = 751731840.

The previous prime is 1223120203. The next prime is 1223120237. The reversal of 1223120223 is 3220213221.

It is not a de Polignac number, because 1223120223 - 2¹⁰ = 1223119199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223120196 and 1223120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223120203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356665 + ... + 360077.

It is an arithmetic number, because the mean of its divisors is an integer number (61059390).

Almost surely, 2^1223120223 is an apocalyptic number.

1223120223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1223120223 is a deficient number, since it is larger than the sum of its proper divisors (730780257).

1223120223 is a wasteful number, since it uses less digits than its factorization.

1223120223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456 (or 4450 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1223120223 is about 34973.1357330166. The cubic root of 1223120223 is about 1069.4398975606.

Adding to 1223120223 its reverse (3220213221), we get a palindrome (4443333444).

The spelling of 1223120223 in words is "one billion, two hundred twenty-three million, one hundred twenty thousand, two hundred twenty-three".