1222453121 has 2 divisors, whose sum is σ = 1222453122. Its totient is φ = 1222453120.

The previous prime is 1222453049. The next prime is 1222453201. The reversal of 1222453121 is 1213542221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1199652496 + 22800625 = 34636^2 + 4775^2 .

It is an emirp because it is prime and its reverse (1213542221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222453121 is a prime.

It is a super-3 number, since 3×1222453121³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1222453021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611226560 + 611226561.

It is an arithmetic number, because the mean of its divisors is an integer number (611226561).

Almost surely, 2^1222453121 is an apocalyptic number.

It is an amenable number.

1222453121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222453121 is an equidigital number, since it uses as much as digits as its factorization.

1222453121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 23.

The square root of 1222453121 is about 34963.5970832522. The cubic root of 1222453121 is about 1069.2454344643.

Adding to 1222453121 its reverse (1213542221), we get a palindrome (2435995342).

The spelling of 1222453121 in words is "one billion, two hundred twenty-two million, four hundred fifty-three thousand, one hundred twenty-one".