201100002281 has 2 divisors, whose sum is σ = 201100002282. Its totient is φ = 201100002280.

The previous prime is 201100002269. The next prime is 201100002347. The reversal of 201100002281 is 182200001102.

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., 197766094681 + 3333907600 = 444709^2 + 57740^2 .

It is a cyclic number.

It is not a de Polignac number, because 201100002281 - 2²⁶ = 201032893417 is a prime.

It is a super-2 number, since 2×201100002281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201100002581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100550001140 + 100550001141.

It is an arithmetic number, because the mean of its divisors is an integer number (100550001141).

Almost surely, 2^201100002281 is an apocalyptic number.

It is an amenable number.

201100002281 is a deficient number, since it is larger than the sum of its proper divisors (1).

201100002281 is an equidigital number, since it uses as much as digits as its factorization.

201100002281 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 17.

Adding to 201100002281 its reverse (182200001102), we get a palindrome (383300003383).

The spelling of 201100002281 in words is "two hundred one billion, one hundred million, two thousand, two hundred eighty-one".