11200203281 has 2 divisors, whose sum is σ = 11200203282. Its totient is φ = 11200203280.

The previous prime is 11200203269. The next prime is 11200203307. The reversal of 11200203281 is 18230200211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6791243281 + 4408960000 = 82409^2 + 66400^2 .

It is a cyclic number.

It is not a de Polignac number, because 11200203281 - 2¹⁴ = 11200186897 is a prime.

It is a super-2 number, since 2×11200203281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11200203221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600101640 + 5600101641.

It is an arithmetic number, because the mean of its divisors is an integer number (5600101641).

Almost surely, 2^11200203281 is an apocalyptic number.

It is an amenable number.

11200203281 is a deficient number, since it is larger than the sum of its proper divisors (1).

11200203281 is an equidigital number, since it uses as much as digits as its factorization.

11200203281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 11200203281 its reverse (18230200211), we get a palindrome (29430403492).

The spelling of 11200203281 in words is "eleven billion, two hundred million, two hundred three thousand, two hundred eighty-one".