200111112281 has 2 divisors, whose sum is σ = 200111112282. Its totient is φ = 200111112280.

The previous prime is 200111112263. The next prime is 200111112323. The reversal of 200111112281 is 182211111002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133371040000 + 66740072281 = 365200^2 + 258341^2 .

It is a cyclic number.

It is not a de Polignac number, because 200111112281 - 2¹⁰ = 200111111257 is a prime.

It is a super-2 number, since 2×200111112281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (200111112581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100055556140 + 100055556141.

It is an arithmetic number, because the mean of its divisors is an integer number (100055556141).

Almost surely, 2^200111112281 is an apocalyptic number.

It is an amenable number.

200111112281 is a deficient number, since it is larger than the sum of its proper divisors (1).

200111112281 is an equidigital number, since it uses as much as digits as its factorization.

200111112281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 200111112281 its reverse (182211111002), we get a palindrome (382322223283).

The spelling of 200111112281 in words is "two hundred billion, one hundred eleven million, one hundred twelve thousand, two hundred eighty-one".