9200120221 has 4 divisors (see below), whose sum is σ = 9600125472. Its totient is φ = 8800114972.

The previous prime is 9200120203. The next prime is 9200120239. The reversal of 9200120221 is 1220210029.

9200120221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (9200120203) and next prime (9200120239).

It is a cyclic number.

It is not a de Polignac number, because 9200120221 - 2¹¹ = 9200118173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9200120021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200002591 + ... + 200002636.

It is an arithmetic number, because the mean of its divisors is an integer number (2400031368).

Almost surely, 2^9200120221 is an apocalyptic number.

It is an amenable number.

9200120221 is a deficient number, since it is larger than the sum of its proper divisors (400005251).

9200120221 is a wasteful number, since it uses less digits than its factorization.

9200120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400005250.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 9200120221 is about 95917.2571594914. The cubic root of 9200120221 is about 2095.3882334257.

The spelling of 9200120221 in words is "nine billion, two hundred million, one hundred twenty thousand, two hundred twenty-one".