1223199120 has 320 divisors, whose sum is σ = 4612204800. Its totient is φ = 264069120.

The previous prime is 1223199097. The next prime is 1223199161. The reversal of 1223199120 is 219913221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 994666 + ... + 995894.

It is an arithmetic number, because the mean of its divisors is an integer number (14413140).

Almost surely, 2^1223199120 is an apocalyptic number.

1223199120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223199120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2306102400).

1223199120 is an abundant number, since it is smaller than the sum of its proper divisors (3389005680).

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

1223199120 is a wasteful number, since it uses less digits than its factorization.

1223199120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1223199120 is about 34974.2636805981. The cubic root of 1223199120 is about 1069.4628916986.

It can be divided in two parts, 12 and 23199120, that added together give a palindrome (23199132).

The spelling of 1223199120 in words is "one billion, two hundred twenty-three million, one hundred ninety-nine thousand, one hundred twenty".