221233241441 has 2 divisors, whose sum is σ = 221233241442. Its totient is φ = 221233241440.

The previous prime is 221233241431. The next prime is 221233241491. The reversal of 221233241441 is 144142332122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162816285025 + 58416956416 = 403505^2 + 241696^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221233241441 is a prime.

It is not a weakly prime, because it can be changed into another prime (221233241431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110616620720 + 110616620721.

It is an arithmetic number, because the mean of its divisors is an integer number (110616620721).

Almost surely, 2^221233241441 is an apocalyptic number.

It is an amenable number.

221233241441 is a deficient number, since it is larger than the sum of its proper divisors (1).

221233241441 is an equidigital number, since it uses as much as digits as its factorization.

221233241441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 29.

Adding to 221233241441 its reverse (144142332122), we get a palindrome (365375573563).

The spelling of 221233241441 in words is "two hundred twenty-one billion, two hundred thirty-three million, two hundred forty-one thousand, four hundred forty-one".