1200200022 has 72 divisors (see below), whose sum is σ = 3031620696. Its totient is φ = 342163584.

The previous prime is 1200200021. The next prime is 1200200041. The reversal of 1200200022 is 2200020021.

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

It is a junction number, because it is equal to n+sod(n) for n = 1200199977 and 1200200013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200200021) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 495358 + ... + 497774.

It is an arithmetic number, because the mean of its divisors is an integer number (42105843).

Almost surely, 2^1200200022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200200022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1515810348).

1200200022 is an abundant number, since it is smaller than the sum of its proper divisors (1831420674).

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

1200200022 is a wasteful number, since it uses less digits than its factorization.

1200200022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002 (or 2992 counting only the distinct ones).

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

The square root of 1200200022 is about 34643.9030999684. The cubic root of 1200200022 is about 1062.7176089836.

Adding to 1200200022 its reverse (2200020021), we get a palindrome (3400220043).

The spelling of 1200200022 in words is "one billion, two hundred million, two hundred thousand, twenty-two".