1121100223 has 4 divisors (see below), whose sum is σ = 1124155360. Its totient is φ = 1118045088.

The previous prime is 1121100193. The next prime is 1121100289. The reversal of 1121100223 is 3220011211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3220011211 = 43943 ⋅73277.

It is a cyclic number.

It is not a de Polignac number, because 1121100223 - 2⁹ = 1121099711 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 (1121104223) 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, 1527018 + ... + 1527751.

It is an arithmetic number, because the mean of its divisors is an integer number (281038840).

Almost surely, 2^1121100223 is an apocalyptic number.

1121100223 is a deficient number, since it is larger than the sum of its proper divisors (3055137).

1121100223 is an equidigital number, since it uses as much as digits as its factorization.

1121100223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055136.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1121100223 is about 33482.8347515559. The cubic root of 1121100223 is about 1038.8387627383.

Adding to 1121100223 its reverse (3220011211), we get a palindrome (4341111434).

The spelling of 1121100223 in words is "one billion, one hundred twenty-one million, one hundred thousand, two hundred twenty-three".