1210120320 has 128 divisors (see below), whose sum is σ = 3871707840. Its totient is φ = 321490944.

The previous prime is 1210120297. The next prime is 1210120357. The reversal of 1210120320 is 230210121.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1210120296 and 1210120305.

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, 588414 + ... + 590466.

Almost surely, 2^1210120320 is an apocalyptic number.

1210120320 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 1210120320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1935853920).

1210120320 is an abundant number, since it is smaller than the sum of its proper divisors (2661587520).

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

1210120320 is a wasteful number, since it uses less digits than its factorization.

1210120320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382 (or 2370 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1210120320 is about 34786.7836972607. The cubic root of 1210120320 is about 1065.6375560536.

Adding to 1210120320 its reverse (230210121), we get a palindrome (1440330441).

The spelling of 1210120320 in words is "one billion, two hundred ten million, one hundred twenty thousand, three hundred twenty".