1320120200 has 48 divisors (see below), whose sum is σ = 3507751680. Its totient is φ = 452612160.

The previous prime is 1320120199. The next prime is 1320120233. The reversal of 1320120200 is 20210231.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 470072 + ... + 472871.

It is an arithmetic number, because the mean of its divisors is an integer number (73078160).

Almost surely, 2^1320120200 is an apocalyptic number.

1320120200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320120200 is an abundant number, since it is smaller than the sum of its proper divisors (2187631480).

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

1320120200 is a wasteful number, since it uses less digits than its factorization.

1320120200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942966 (or 942957 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1320120200 is about 36333.4584095706. The cubic root of 1320120200 is about 1096.9946061298.

Adding to 1320120200 its reverse (20210231), we get a palindrome (1340330431).

The spelling of 1320120200 in words is "one billion, three hundred twenty million, one hundred twenty thousand, two hundred".