1330222381 has 2 divisors, whose sum is σ = 1330222382. Its totient is φ = 1330222380.

The previous prime is 1330222379. The next prime is 1330222403. The reversal of 1330222381 is 1832220331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1299242025 + 30980356 = 36045^2 + 5566^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330222381 - 2¹ = 1330222379 is a prime.

It is a super-2 number, since 2×1330222381² = 3538983165826618322, which contains 22 as substring.

Together with 1330222379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1330222351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665111190 + 665111191.

It is an arithmetic number, because the mean of its divisors is an integer number (665111191).

Almost surely, 2^1330222381 is an apocalyptic number.

It is an amenable number.

1330222381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330222381 is an equidigital number, since it uses as much as digits as its factorization.

1330222381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1330222381 is about 36472.2138209350. The cubic root of 1330222381 is about 1099.7857381578.

The spelling of 1330222381 in words is "one billion, three hundred thirty million, two hundred twenty-two thousand, three hundred eighty-one".