1222353221 has 8 divisors (see below), whose sum is σ = 1237753920. Its totient is φ = 1207020672.

The previous prime is 1222353211. The next prime is 1222353229. The reversal of 1222353221 is 1223532221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222353221 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 (1222353229) 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, 19550 + ... + 53168.

It is an arithmetic number, because the mean of its divisors is an integer number (154719240).

Almost surely, 2^1222353221 is an apocalyptic number.

It is an amenable number.

1222353221 is a deficient number, since it is larger than the sum of its proper divisors (15400699).

1222353221 is a wasteful number, since it uses less digits than its factorization.

1222353221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34075.

The product of its digits is 1440, while the sum is 23.

The square root of 1222353221 is about 34962.1684253137. The cubic root of 1222353221 is about 1069.2163070955.

Adding to 1222353221 its reverse (1223532221), we get a palindrome (2445885442).

It can be divided in two parts, 1 and 222353221, that added together give a palindrome (222353222).

The spelling of 1222353221 in words is "one billion, two hundred twenty-two million, three hundred fifty-three thousand, two hundred twenty-one".