1121200221 has 8 divisors (see below), whose sum is σ = 1495147104. Its totient is φ = 747360080.

The previous prime is 1121200207. The next prime is 1121200231. The reversal of 1121200221 is 1220021211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121200221 - 2¹³ = 1121192029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121200197 and 1121200206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121200231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2335 + ... + 47411.

It is an arithmetic number, because the mean of its divisors is an integer number (186893388).

Almost surely, 2^1121200221 is an apocalyptic number.

It is an amenable number.

1121200221 is a deficient number, since it is larger than the sum of its proper divisors (373946883).

1121200221 is an equidigital number, since it uses as much as digits as its factorization.

1121200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53371.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1121200221 is about 33484.3279908676. The cubic root of 1121200221 is about 1038.8696486805.

Adding to 1121200221 its reverse (1220021211), we get a palindrome (2341221432).

The spelling of 1121200221 in words is "one billion, one hundred twenty-one million, two hundred thousand, two hundred twenty-one".