1223123120 has 40 divisors (see below), whose sum is σ = 2862874800. Its totient is φ = 485960960.

The previous prime is 1223123107. The next prime is 1223123137. The reversal of 1223123120 is 213213221.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39386 + ... + 63225.

It is an arithmetic number, because the mean of its divisors is an integer number (71571870).

Almost surely, 2^1223123120 is an apocalyptic number.

1223123120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223123120 is an abundant number, since it is smaller than the sum of its proper divisors (1639751680).

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

1223123120 is a wasteful number, since it uses less digits than its factorization.

1223123120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102773 (or 102767 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1223123120 is about 34973.1771504964. The cubic root of 1223123120 is about 1069.4407418943.

Adding to 1223123120 its reverse (213213221), we get a palindrome (1436336341).

The spelling of 1223123120 in words is "one billion, two hundred twenty-three million, one hundred twenty-three thousand, one hundred twenty".