1200200221 has 16 divisors (see below), whose sum is σ = 1392431040. Its totient is φ = 1022388480.

The previous prime is 1200200213. The next prime is 1200200249. The reversal of 1200200221 is 1220020021.

It is a cyclic number.

It is not a de Polignac number, because 1200200221 - 2³ = 1200200213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200200198 and 1200200207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200200251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28810 + ... + 56836.

It is an arithmetic number, because the mean of its divisors is an integer number (87026940).

Almost surely, 2^1200200221 is an apocalyptic number.

1200200221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200200221 is a deficient number, since it is larger than the sum of its proper divisors (192230819).

1200200221 is a wasteful number, since it uses less digits than its factorization.

1200200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28284.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1200200221 is about 34643.9059720465. The cubic root of 1200200221 is about 1062.7176677185.

Adding to 1200200221 its reverse (1220020021), we get a palindrome (2420220242).

The spelling of 1200200221 in words is "one billion, two hundred million, two hundred thousand, two hundred twenty-one".