1441222781 has 2 divisors, whose sum is σ = 1441222782. Its totient is φ = 1441222780.

The previous prime is 1441222733. The next prime is 1441222793. The reversal of 1441222781 is 1872221441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1170324100 + 270898681 = 34210^2 + 16459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1441222781 is a prime.

It is a super-2 number, since 2×1441222781² = 4154246208946747922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1441225781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720611390 + 720611391.

It is an arithmetic number, because the mean of its divisors is an integer number (720611391).

Almost surely, 2^1441222781 is an apocalyptic number.

It is an amenable number.

1441222781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1441222781 is an equidigital number, since it uses as much as digits as its factorization.

1441222781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7168, while the sum is 32.

The square root of 1441222781 is about 37963.4400575080. The cubic root of 1441222781 is about 1129.5627778318.

The spelling of 1441222781 in words is "one billion, four hundred forty-one million, two hundred twenty-two thousand, seven hundred eighty-one".