1105220345 has 4 divisors (see below), whose sum is σ = 1326264420. Its totient is φ = 884176272.

The previous prime is 1105220341. The next prime is 1105220351. The reversal of 1105220345 is 5430225011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5430225011 = 11779 ⋅461009.

It can be written as a sum of positive squares in 2 ways, for example, as 732460096 + 372760249 = 27064^2 + 19307^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105220345 - 2² = 1105220341 is a prime.

It is a super-2 number, since 2×1105220345² = 2443024022003838050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1105220345.

It is not an unprimeable number, because it can be changed into a prime (1105220341) 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, 110522030 + ... + 110522039.

It is an arithmetic number, because the mean of its divisors is an integer number (331566105).

Almost surely, 2^1105220345 is an apocalyptic number.

It is an amenable number.

1105220345 is a deficient number, since it is larger than the sum of its proper divisors (221044075).

1105220345 is an equidigital number, since it uses as much as digits as its factorization.

1105220345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221044074.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1105220345 is about 33244.8544138788. The cubic root of 1105220345 is about 1033.9105263615.

Adding to 1105220345 its reverse (5430225011), we get a palindrome (6535445356).

The spelling of 1105220345 in words is "one billion, one hundred five million, two hundred twenty thousand, three hundred forty-five".