1200321210120 has 32 divisors (see below), whose sum is σ = 3600963630720. Its totient is φ = 320085656000.

The previous prime is 1200321210103. The next prime is 1200321210149. The reversal of 1200321210120 is 210121230021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1200321210120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5001338256 + ... + 5001338495.

It is an arithmetic number, because the mean of its divisors is an integer number (112530113460).

Almost surely, 2^{1200321210120} is an apocalyptic number.

1200321210120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200321210120 is an abundant number, since it is smaller than the sum of its proper divisors (2400642420600).

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

1200321210120 is a wasteful number, since it uses less digits than its factorization.

1200321210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10002676765 (or 10002676761 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1200321210120 its reverse (210121230021), we get a palindrome (1410442440141).

The spelling of 1200321210120 in words is "one trillion, two hundred billion, three hundred twenty-one million, two hundred ten thousand, one hundred twenty".