1200021220002 has 32 divisors (see below), whose sum is σ = 2688991043904. Its totient is φ = 353814609600.

The previous prime is 1200021219989. The next prime is 1200021220031. The reversal of 1200021220002 is 2000221200021.

It is a self number, because there is not a number n which added to its sum of digits gives 1200021220002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245702149 + ... + 245707032.

It is an arithmetic number, because the mean of its divisors is an integer number (84030970122).

Almost surely, 2^{1200021220002} is an apocalyptic number.

1200021220002 is an abundant number, since it is smaller than the sum of its proper divisors (1488969823902).

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

1200021220002 is a wasteful number, since it uses less digits than its factorization.

1200021220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491409234.

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

Adding to 1200021220002 its reverse (2000221200021), we get a palindrome (3200242420023).

The spelling of 1200021220002 in words is "one trillion, two hundred billion, twenty-one million, two hundred twenty thousand, two".