1222345345 has 32 divisors (see below), whose sum is σ = 1635056640. Its totient is φ = 871153920.

The previous prime is 1222345321. The next prime is 1222345451. The reversal of 1222345345 is 5435432221.

It is not a de Polignac number, because 1222345345 - 2¹⁵ = 1222312577 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1101651 + ... + 1102759.

It is an arithmetic number, because the mean of its divisors is an integer number (51095520).

Almost surely, 2^1222345345 is an apocalyptic number.

It is an amenable number.

1222345345 is a deficient number, since it is larger than the sum of its proper divisors (412711295).

1222345345 is a wasteful number, since it uses less digits than its factorization.

1222345345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705.

The product of its digits is 28800, while the sum is 31.

The square root of 1222345345 is about 34962.0557890980. The cubic root of 1222345345 is about 1069.2140106601.

Adding to 1222345345 its reverse (5435432221), we get a palindrome (6657777566).

The spelling of 1222345345 in words is "one billion, two hundred twenty-two million, three hundred forty-five thousand, three hundred forty-five".