1053432240221 has 2 divisors, whose sum is σ = 1053432240222. Its totient is φ = 1053432240220.

The previous prime is 1053432240197. The next prime is 1053432240233. The reversal of 1053432240221 is 1220422343501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1049712948025 + 3719292196 = 1024555^2 + 60986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1053432240221 is a prime.

It is a super-2 number, since 2×1053432240221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1053432240251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526716120110 + 526716120111.

It is an arithmetic number, because the mean of its divisors is an integer number (526716120111).

Almost surely, 2^{1053432240221} is an apocalyptic number.

It is an amenable number.

1053432240221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1053432240221 is an equidigital number, since it uses as much as digits as its factorization.

1053432240221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 1053432240221 its reverse (1220422343501), we get a palindrome (2273854583722).

The spelling of 1053432240221 in words is "one trillion, fifty-three billion, four hundred thirty-two million, two hundred forty thousand, two hundred twenty-one".