1121200211 has 4 divisors (see below), whose sum is σ = 1136559192. Its totient is φ = 1105841232.

The previous prime is 1121200207. The next prime is 1121200231. The reversal of 1121200211 is 1120021211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121200211 - 2² = 1121200207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121200192 and 1121200201.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7679381 + ... + 7679526.

It is an arithmetic number, because the mean of its divisors is an integer number (284139798).

Almost surely, 2^1121200211 is an apocalyptic number.

1121200211 is a deficient number, since it is larger than the sum of its proper divisors (15358981).

1121200211 is an equidigital number, since it uses as much as digits as its factorization.

1121200211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15358980.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1121200211 is about 33484.3278415440. The cubic root of 1121200211 is about 1038.8696455920.

Adding to 1121200211 its reverse (1120021211), we get a palindrome (2241221422).

The spelling of 1121200211 in words is "one billion, one hundred twenty-one million, two hundred thousand, two hundred eleven".