1200120220002 has 128 divisors (see below), whose sum is σ = 2721955000320. Its totient is φ = 349583984640.

The previous prime is 1200120219989. The next prime is 1200120220009. The reversal of 1200120220002 is 2000220210021.

It is a self number, because there is not a number n which added to its sum of digits gives 1200120220002.

It is not an unprimeable number, because it can be changed into a prime (1200120220009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 265922898 + ... + 265927410.

It is an arithmetic number, because the mean of its divisors is an integer number (21265273440).

Almost surely, 2^{1200120220002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200120220002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1360977500160).

1200120220002 is an abundant number, since it is smaller than the sum of its proper divisors (1521834780318).

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

1200120220002 is a wasteful number, since it uses less digits than its factorization.

1200120220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6088.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1200120220002 its reverse (2000220210021), we get a palindrome (3200340430023).

The spelling of 1200120220002 in words is "one trillion, two hundred billion, one hundred twenty million, two hundred twenty thousand, two".