1101222445 has 4 divisors (see below), whose sum is σ = 1321466940. Its totient is φ = 880977952.

The previous prime is 1101222443. The next prime is 1101222457. The reversal of 1101222445 is 5442221011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5442221011 = 8171 ⋅666041.

It can be written as a sum of positive squares in 2 ways, for example, as 779414724 + 321807721 = 27918^2 + 17939^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101222445 - 2¹ = 1101222443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101222443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110122240 + ... + 110122249.

It is an arithmetic number, because the mean of its divisors is an integer number (330366735).

Almost surely, 2^1101222445 is an apocalyptic number.

It is an amenable number.

1101222445 is a deficient number, since it is larger than the sum of its proper divisors (220244495).

1101222445 is an equidigital number, since it uses as much as digits as its factorization.

1101222445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220244494.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1101222445 is about 33184.6718380640. The cubic root of 1101222445 is about 1032.6623695462.

Adding to 1101222445 its reverse (5442221011), we get a palindrome (6543443456).

The spelling of 1101222445 in words is "one billion, one hundred one million, two hundred twenty-two thousand, four hundred forty-five".