11022120281 has 2 divisors, whose sum is σ = 11022120282. Its totient is φ = 11022120280.

The previous prime is 11022120227. The next prime is 11022120293. The reversal of 11022120281 is 18202122011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6397440256 + 4624680025 = 79984^2 + 68005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11022120281 is a prime.

It is a super-2 number, since 2×11022120281² (a number of 21 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 (11022120181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5511060140 + 5511060141.

It is an arithmetic number, because the mean of its divisors is an integer number (5511060141).

Almost surely, 2^11022120281 is an apocalyptic number.

It is an amenable number.

11022120281 is a deficient number, since it is larger than the sum of its proper divisors (1).

11022120281 is an equidigital number, since it uses as much as digits as its factorization.

11022120281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11022120281 its reverse (18202122011), we get a palindrome (29224242292).

The spelling of 11022120281 in words is "eleven billion, twenty-two million, one hundred twenty thousand, two hundred eighty-one".