11353452221 has 2 divisors, whose sum is σ = 11353452222. Its totient is φ = 11353452220.

The previous prime is 11353452217. The next prime is 11353452251. The reversal of 11353452221 is 12225435311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7307856196 + 4045596025 = 85486^2 + 63605^2 .

It is a cyclic number.

It is not a de Polignac number, because 11353452221 - 2² = 11353452217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11353452251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5676726110 + 5676726111.

It is an arithmetic number, because the mean of its divisors is an integer number (5676726111).

Almost surely, 2^11353452221 is an apocalyptic number.

It is an amenable number.

11353452221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11353452221 is an equidigital number, since it uses as much as digits as its factorization.

11353452221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

Adding to 11353452221 its reverse (12225435311), we get a palindrome (23578887532).

The spelling of 11353452221 in words is "eleven billion, three hundred fifty-three million, four hundred fifty-two thousand, two hundred twenty-one".