1121100211 has 24 divisors (see below), whose sum is σ = 1411425792. Its totient is φ = 871662000.

The previous prime is 1121100193. The next prime is 1121100289. The reversal of 1121100211 is 1120011211.

It is not a de Polignac number, because 1121100211 - 2⁷ = 1121100083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121103211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 475686 + ... + 478036.

It is an arithmetic number, because the mean of its divisors is an integer number (58809408).

Almost surely, 2^1121100211 is an apocalyptic number.

1121100211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1121100211 is a deficient number, since it is larger than the sum of its proper divisors (290325581).

1121100211 is a wasteful number, since it uses less digits than its factorization.

1121100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2943 (or 2932 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1121100211 is about 33482.8345723596. The cubic root of 1121100211 is about 1038.8387590318.

Adding to 1121100211 its reverse (1120011211), we get a palindrome (2241111422).

The spelling of 1121100211 in words is "one billion, one hundred twenty-one million, one hundred thousand, two hundred eleven".