1223220232 has 32 divisors (see below), whose sum is σ = 2555141400. Its totient is φ = 545094144.

The previous prime is 1223220197. The next prime is 1223220233. The reversal of 1223220232 is 2320223221.

It can be written as a sum of positive squares in 4 ways, for example, as 668429316 + 554790916 = 25854^2 + 23554^2 .

It is not an unprimeable number, because it can be changed into a prime (1223220233) 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, 199773 + ... + 205804.

Almost surely, 2^1223220232 is an apocalyptic number.

It is an amenable number.

1223220232 is an abundant number, since it is smaller than the sum of its proper divisors (1331921168).

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

1223220232 is a wasteful number, since it uses less digits than its factorization.

1223220232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405625 (or 405621 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1223220232 is about 34974.5655012325. The cubic root of 1223220232 is about 1069.4690445182.

Adding to 1223220232 its reverse (2320223221), we get a palindrome (3543443453).

The spelling of 1223220232 in words is "one billion, two hundred twenty-three million, two hundred twenty thousand, two hundred thirty-two".