221344041441377 has 2 divisors, whose sum is σ = 221344041441378. Its totient is φ = 221344041441376.

The previous prime is 221344041441373. The next prime is 221344041441403. The reversal of 221344041441377 is 773144140443122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220796092105681 + 547949335696 = 14859209^2 + 740236^2 .

It is a cyclic number.

It is not a de Polignac number, because 221344041441377 - 2² = 221344041441373 is a prime.

It is a super-2 number, since 2×221344041441377² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221344041441373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110672020720688 + 110672020720689.

It is an arithmetic number, because the mean of its divisors is an integer number (110672020720689).

Almost surely, 2^{221344041441377} is an apocalyptic number.

It is an amenable number.

221344041441377 is a deficient number, since it is larger than the sum of its proper divisors (1).

221344041441377 is an equidigital number, since it uses as much as digits as its factorization.

221344041441377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1806336, while the sum is 47.

Adding to 221344041441377 its reverse (773144140443122), we get a palindrome (994488181884499).

The spelling of 221344041441377 in words is "two hundred twenty-one trillion, three hundred forty-four billion, forty-one million, four hundred forty-one thousand, three hundred seventy-seven".