1200021210102 has 192 divisors, whose sum is σ = 2993145039360. Its totient is φ = 317724042240.

The previous prime is 1200021210079. The next prime is 1200021210103. The reversal of 1200021210102 is 2010121200021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200021210103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 276691678 + ... + 276696014.

It is an arithmetic number, because the mean of its divisors is an integer number (15589297080).

Almost surely, 2^{1200021210102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200021210102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1496572519680).

1200021210102 is an abundant number, since it is smaller than the sum of its proper divisors (1793123829258).

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

1200021210102 is a wasteful number, since it uses less digits than its factorization.

1200021210102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5939 (or 5928 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1200021210102 its reverse (2010121200021), we get a palindrome (3210142410123).

The spelling of 1200021210102 in words is "one trillion, two hundred billion, twenty-one million, two hundred ten thousand, one hundred two".