221435301053 has 2 divisors, whose sum is σ = 221435301054. Its totient is φ = 221435301052.

The previous prime is 221435300987. The next prime is 221435301071. The reversal of 221435301053 is 350103534122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220939481764 + 495819289 = 470042^2 + 22267^2 .

It is a cyclic number.

It is not a de Polignac number, because 221435301053 - 2²⁶ = 221368192189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221435301853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110717650526 + 110717650527.

It is an arithmetic number, because the mean of its divisors is an integer number (110717650527).

Almost surely, 2^221435301053 is an apocalyptic number.

It is an amenable number.

221435301053 is a deficient number, since it is larger than the sum of its proper divisors (1).

221435301053 is an equidigital number, since it uses as much as digits as its factorization.

221435301053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 221435301053 its reverse (350103534122), we get a palindrome (571538835175).

The spelling of 221435301053 in words is "two hundred twenty-one billion, four hundred thirty-five million, three hundred one thousand, fifty-three".