1203322120 has 256 divisors, whose sum is σ = 3728954880. Its totient is φ = 337305600.

The previous prime is 1203322093. The next prime is 1203322139. The reversal of 1203322120 is 212233021.

It is a junction number, because it is equal to n+sod(n) for n = 1203322094 and 1203322103.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1641274 + ... + 1642006.

It is an arithmetic number, because the mean of its divisors is an integer number (14566230).

Almost surely, 2^1203322120 is an apocalyptic number.

1203322120 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 1203322120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1864477440).

1203322120 is an abundant number, since it is smaller than the sum of its proper divisors (2525632760).

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

1203322120 is a wasteful number, since it uses less digits than its factorization.

1203322120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1203322120 is about 34688.9336820837. The cubic root of 1203322120 is about 1063.6382987677.

Adding to 1203322120 its reverse (212233021), we get a palindrome (1415555141).

It can be divided in two parts, 1203 and 322120, that added together give a palindrome (323323).

The spelling of 1203322120 in words is "one billion, two hundred three million, three hundred twenty-two thousand, one hundred twenty".