1334220221 has 2 divisors, whose sum is σ = 1334220222. Its totient is φ = 1334220220.

The previous prime is 1334220203. The next prime is 1334220229. The reversal of 1334220221 is 1220224331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 973752025 + 360468196 = 31205^2 + 18986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1334220221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1334220193 and 1334220202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1334220229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 667110110 + 667110111.

It is an arithmetic number, because the mean of its divisors is an integer number (667110111).

Almost surely, 2^1334220221 is an apocalyptic number.

It is an amenable number.

1334220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1334220221 is an equidigital number, since it uses as much as digits as its factorization.

1334220221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1334220221 is about 36526.9793577295. The cubic root of 1334220221 is about 1100.8863987561.

Adding to 1334220221 its reverse (1220224331), we get a palindrome (2554444552).

The spelling of 1334220221 in words is "one billion, three hundred thirty-four million, two hundred twenty thousand, two hundred twenty-one".