221434341053 has 2 divisors, whose sum is σ = 221434341054. Its totient is φ = 221434341052.

The previous prime is 221434341047. The next prime is 221434341157. The reversal of 221434341053 is 350143434122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221390952484 + 43388569 = 470522^2 + 6587^2 .

It is a cyclic number.

It is not a de Polignac number, because 221434341053 - 2¹² = 221434336957 is a prime.

It is a super-2 number, since 2×221434341053² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221434341253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110717170526 + 110717170527.

It is an arithmetic number, because the mean of its divisors is an integer number (110717170527).

Almost surely, 2^221434341053 is an apocalyptic number.

It is an amenable number.

221434341053 is a deficient number, since it is larger than the sum of its proper divisors (1).

221434341053 is an equidigital number, since it uses as much as digits as its factorization.

221434341053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 221434341053 its reverse (350143434122), we get a palindrome (571577775175).

The spelling of 221434341053 in words is "two hundred twenty-one billion, four hundred thirty-four million, three hundred forty-one thousand, fifty-three".