1223066243 has 16 divisors (see below), whose sum is σ = 1432104960. Its totient is φ = 1022668416.

The previous prime is 1223066237. The next prime is 1223066297. The reversal of 1223066243 is 3426603221.

It is not a de Polignac number, because 1223066243 - 2⁴ = 1223066227 is a prime.

It is a super-2 number, since 2×1223066243² = 2991782069532270098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223065243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291998 + ... + 296156.

It is an arithmetic number, because the mean of its divisors is an integer number (89506560).

Almost surely, 2^1223066243 is an apocalyptic number.

1223066243 is a deficient number, since it is larger than the sum of its proper divisors (209038717).

1223066243 is an equidigital number, since it uses as much as digits as its factorization.

1223066243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5186.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 1223066243 is about 34972.3639892988. The cubic root of 1223066243 is about 1069.4241647886.

Adding to 1223066243 its reverse (3426603221), we get a palindrome (4649669464).

The spelling of 1223066243 in words is "one billion, two hundred twenty-three million, sixty-six thousand, two hundred forty-three".