220261441 has 2 divisors, whose sum is σ = 220261442. Its totient is φ = 220261440.

The previous prime is 220261439. The next prime is 220261463. The reversal of 220261441 is 144162022.

It is a happy number.

It is an a-pointer prime, because the next prime (220261463) can be obtained adding 220261441 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210830400 + 9431041 = 14520^2 + 3071^2 .

It is a cyclic number.

It is not a de Polignac number, because 220261441 - 2¹ = 220261439 is a prime.

Together with 220261439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (220261421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110130720 + 110130721.

It is an arithmetic number, because the mean of its divisors is an integer number (110130721).

Almost surely, 2^220261441 is an apocalyptic number.

It is an amenable number.

220261441 is a deficient number, since it is larger than the sum of its proper divisors (1).

220261441 is an equidigital number, since it uses as much as digits as its factorization.

220261441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 220261441 is about 14841.2075317341. The cubic root of 220261441 is about 603.9201108100.

The spelling of 220261441 in words is "two hundred twenty million, two hundred sixty-one thousand, four hundred forty-one".