11231221020353 has 2 divisors, whose sum is σ = 11231221020354. Its totient is φ = 11231221020352.

The previous prime is 11231221020347. The next prime is 11231221020367. The reversal of 11231221020353 is 35302012213211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10696484220304 + 534736800049 = 3270548^2 + 731257^2 .

It is a cyclic number.

It is not a de Polignac number, because 11231221020353 - 2⁴ = 11231221020337 is a prime.

It is a super-2 number, since 2×11231221020353² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11231221020653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5615610510176 + 5615610510177.

It is an arithmetic number, because the mean of its divisors is an integer number (5615610510177).

Almost surely, 2^{11231221020353} is an apocalyptic number.

It is an amenable number.

11231221020353 is a deficient number, since it is larger than the sum of its proper divisors (1).

11231221020353 is an equidigital number, since it uses as much as digits as its factorization.

11231221020353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 11231221020353 its reverse (35302012213211), we get a palindrome (46533233233564).

The spelling of 11231221020353 in words is "eleven trillion, two hundred thirty-one billion, two hundred twenty-one million, twenty thousand, three hundred fifty-three".