1222333121 has 2 divisors, whose sum is σ = 1222333122. Its totient is φ = 1222333120.

The previous prime is 1222333027. The next prime is 1222333141. The reversal of 1222333121 is 1213332221.

It is an a-pointer prime, because the next prime (1222333141) can be obtained adding 1222333121 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1220524096 + 1809025 = 34936^2 + 1345^2 .

It is an emirp because it is prime and its reverse (1213332221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222333121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222333093 and 1222333102.

It is not a weakly prime, because it can be changed into another prime (1222333141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611166560 + 611166561.

It is an arithmetic number, because the mean of its divisors is an integer number (611166561).

Almost surely, 2^1222333121 is an apocalyptic number.

It is an amenable number.

1222333121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222333121 is an equidigital number, since it uses as much as digits as its factorization.

1222333121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 1222333121 is about 34961.8809705656. The cubic root of 1222333121 is about 1069.2104464421.

Adding to 1222333121 its reverse (1213332221), we get a palindrome (2435665342).

The spelling of 1222333121 in words is "one billion, two hundred twenty-two million, three hundred thirty-three thousand, one hundred twenty-one".