1222345357 has 4 divisors (see below), whose sum is σ = 1255381756. Its totient is φ = 1189308960.

The previous prime is 1222345321. The next prime is 1222345451. The reversal of 1222345357 is 7535432221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 679175721 + 543169636 = 26061^2 + 23306^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222345357 - 2¹⁵ = 1222312589 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 (1222345757) 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, 16518144 + ... + 16518217.

It is an arithmetic number, because the mean of its divisors is an integer number (313845439).

Almost surely, 2^1222345357 is an apocalyptic number.

It is an amenable number.

1222345357 is a deficient number, since it is larger than the sum of its proper divisors (33036399).

1222345357 is an equidigital number, since it uses as much as digits as its factorization.

1222345357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33036398.

The product of its digits is 50400, while the sum is 34.

The square root of 1222345357 is about 34962.0559607126. The cubic root of 1222345357 is about 1069.2140141590.

Adding to 1222345357 its reverse (7535432221), we get a palindrome (8757777578).

The spelling of 1222345357 in words is "one billion, two hundred twenty-two million, three hundred forty-five thousand, three hundred fifty-seven".