11121004481 has 2 divisors, whose sum is σ = 11121004482. Its totient is φ = 11121004480.

The previous prime is 11121004463. The next prime is 11121004547. The reversal of 11121004481 is 18440012111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7306830400 + 3814174081 = 85480^2 + 61759^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121004481 - 2⁶ = 11121004417 is a prime.

It is a super-2 number, since 2×11121004481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11121004421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560502240 + 5560502241.

It is an arithmetic number, because the mean of its divisors is an integer number (5560502241).

Almost surely, 2^11121004481 is an apocalyptic number.

It is an amenable number.

11121004481 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121004481 is an equidigital number, since it uses as much as digits as its factorization.

11121004481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 23.

Adding to 11121004481 its reverse (18440012111), we get a palindrome (29561016592).

The spelling of 11121004481 in words is "eleven billion, one hundred twenty-one million, four thousand, four hundred eighty-one".