1222003445 has 8 divisors (see below), whose sum is σ = 1579204536. Its totient is φ = 902402496.

The previous prime is 1222003379. The next prime is 1222003459. The reversal of 1222003445 is 5443002221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4761124 + 1217242321 = 2182^2 + 34889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222003445 - 2¹² = 1221999349 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222003445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9399962 + ... + 9400091.

It is an arithmetic number, because the mean of its divisors is an integer number (197400567).

Almost surely, 2^1222003445 is an apocalyptic number.

It is an amenable number.

1222003445 is a deficient number, since it is larger than the sum of its proper divisors (357201091).

1222003445 is a wasteful number, since it uses less digits than its factorization.

1222003445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18800071.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1222003445 is about 34957.1658605214. The cubic root of 1222003445 is about 1069.1143120600.

Adding to 1222003445 its reverse (5443002221), we get a palindrome (6665005666).

The spelling of 1222003445 in words is "one billion, two hundred twenty-two million, three thousand, four hundred forty-five".