1105221121 has 4 divisors (see below), whose sum is σ = 1128736512. Its totient is φ = 1081705732.

The previous prime is 1105221107. The next prime is 1105221151. The reversal of 1105221121 is 1211225011.

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 a cyclic number.

It is not a de Polignac number, because 1105221121 - 2⁷ = 1105220993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1105221095 and 1105221104.

It is not an unprimeable number, because it can be changed into a prime (1105221101) 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, 11757625 + ... + 11757718.

It is an arithmetic number, because the mean of its divisors is an integer number (282184128).

Almost surely, 2^1105221121 is an apocalyptic number.

It is an amenable number.

1105221121 is a deficient number, since it is larger than the sum of its proper divisors (23515391).

1105221121 is an equidigital number, since it uses as much as digits as its factorization.

1105221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23515390.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1105221121 is about 33244.8660848559. The cubic root of 1105221121 is about 1033.9107683387.

Adding to 1105221121 its reverse (1211225011), we get a palindrome (2316446132).

The spelling of 1105221121 in words is "one billion, one hundred five million, two hundred twenty-one thousand, one hundred twenty-one".