1200210321020 has 12 divisors (see below), whose sum is σ = 2520441674184. Its totient is φ = 480084128400.

The previous prime is 1200210321017. The next prime is 1200210321029. The reversal of 1200210321020 is 201230120021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1200210320986 and 1200210321004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200210321029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30005258006 + ... + 30005258045.

It is an arithmetic number, because the mean of its divisors is an integer number (210036806182).

Almost surely, 2^{1200210321020} is an apocalyptic number.

1200210321020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200210321020 is an abundant number, since it is smaller than the sum of its proper divisors (1320231353164).

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

1200210321020 is a wasteful number, since it uses less digits than its factorization.

1200210321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60010516060 (or 60010516058 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1200210321020 its reverse (201230120021), we get a palindrome (1401440441041).

The spelling of 1200210321020 in words is "one trillion, two hundred billion, two hundred ten million, three hundred twenty-one thousand, twenty".