1222245445 has 8 divisors (see below), whose sum is σ = 1475478144. Its totient is φ = 971940624.

The previous prime is 1222245443. The next prime is 1222245469. The reversal of 1222245445 is 5445422221.

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 1222245445 - 2¹ = 1222245443 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 (1222245443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 731049 + ... + 732718.

It is an arithmetic number, because the mean of its divisors is an integer number (184434768).

Almost surely, 2^1222245445 is an apocalyptic number.

It is an amenable number.

1222245445 is a deficient number, since it is larger than the sum of its proper divisors (253232699).

1222245445 is a wasteful number, since it uses less digits than its factorization.

1222245445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463939.

The product of its digits is 25600, while the sum is 31.

The square root of 1222245445 is about 34960.6270681748. The cubic root of 1222245445 is about 1069.1848815791.

Adding to 1222245445 its reverse (5445422221), we get a palindrome (6667667666).

The spelling of 1222245445 in words is "one billion, two hundred twenty-two million, two hundred forty-five thousand, four hundred forty-five".