1200020220000 has 360 divisors, whose sum is σ = 4873527234576. Its totient is φ = 274290048000.

The previous prime is 1200020219939. The next prime is 1200020220037. The reversal of 1200020220000 is 220200021.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 783802 + ... + 1736198.

Almost surely, 2^{1200020220000} is an apocalyptic number.

1200020220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200020220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2436763617288).

1200020220000 is an abundant number, since it is smaller than the sum of its proper divisors (3673507014576).

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

1200020220000 is an equidigital number, since it uses as much as digits as its factorization.

1200020220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952440 (or 952414 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 1200020220000 its reverse (220200021), we get a palindrome (1200240420021).

The spelling of 1200020220000 in words is "one trillion, two hundred billion, twenty million, two hundred twenty thousand".