11221452305381 has 2 divisors, whose sum is σ = 11221452305382. Its totient is φ = 11221452305380.

The previous prime is 11221452305377. The next prime is 11221452305471. The reversal of 11221452305381 is 18350325412211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9227894685025 + 1993557620356 = 3037745^2 + 1411934^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221452305381 - 2² = 11221452305377 is a prime.

It is a super-2 number, since 2×11221452305381² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221452305321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610726152690 + 5610726152691.

It is an arithmetic number, because the mean of its divisors is an integer number (5610726152691).

Almost surely, 2^{11221452305381} is an apocalyptic number.

It is an amenable number.

11221452305381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221452305381 is an equidigital number, since it uses as much as digits as its factorization.

11221452305381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 38.

Adding to 11221452305381 its reverse (18350325412211), we get a palindrome (29571777717592).

The spelling of 11221452305381 in words is "eleven trillion, two hundred twenty-one billion, four hundred fifty-two million, three hundred five thousand, three hundred eighty-one".