1223243112 has 64 divisors (see below), whose sum is σ = 3763831680. Its totient is φ = 322612992.

The previous prime is 1223243107. The next prime is 1223243137. The reversal of 1223243112 is 2113423221.

It is a super-2 number, since 2×1223243112² = 2992647422110889088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277863 + ... + 282230.

It is an arithmetic number, because the mean of its divisors is an integer number (58809870).

Almost surely, 2^1223243112 is an apocalyptic number.

1223243112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1223243112 is an abundant number, since it is smaller than the sum of its proper divisors (2540588568).

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

1223243112 is a wasteful number, since it uses less digits than its factorization.

1223243112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560122 (or 560118 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 1223243112 is about 34974.8925945456. The cubic root of 1223243112 is about 1069.4757125186.

Adding to 1223243112 its reverse (2113423221), we get a palindrome (3336666333).

The spelling of 1223243112 in words is "one billion, two hundred twenty-three million, two hundred forty-three thousand, one hundred twelve".