1200022002220 has 24 divisors (see below), whose sum is σ = 2520249351984. Its totient is φ = 479970106176.

The previous prime is 1200022002167. The next prime is 1200022002229. The reversal of 1200022002220 is 222002200021.

It is a self number, because there is not a number n which added to its sum of digits gives 1200022002220.

It is not an unprimeable number, because it can be changed into a prime (1200022002229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2163462 + ... + 2660941.

It is an arithmetic number, because the mean of its divisors is an integer number (105010389666).

Almost surely, 2^{1200022002220} is an apocalyptic number.

1200022002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200022002220 is an abundant number, since it is smaller than the sum of its proper divisors (1320227349764).

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

1200022002220 is a wasteful number, since it uses less digits than its factorization.

1200022002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4836849 (or 4836847 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 1200022002220 its reverse (222002200021), we get a palindrome (1422024202241).

The spelling of 1200022002220 in words is "one trillion, two hundred billion, twenty-two million, two thousand, two hundred twenty".