201001211100281 has 2 divisors, whose sum is σ = 201001211100282. Its totient is φ = 201001211100280.

The previous prime is 201001211100247. The next prime is 201001211100401. The reversal of 201001211100281 is 182001112100102.

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., 200995580098681 + 5631001600 = 14177291^2 + 75040^2 .

It is a cyclic number.

It is not a de Polignac number, because 201001211100281 - 2⁴² = 196603164589177 is a prime.

It is a super-2 number, since 2×201001211100281² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201001211100211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500605550140 + 100500605550141.

It is an arithmetic number, because the mean of its divisors is an integer number (100500605550141).

Almost surely, 2^{201001211100281} is an apocalyptic number.

It is an amenable number.

201001211100281 is a deficient number, since it is larger than the sum of its proper divisors (1).

201001211100281 is an equidigital number, since it uses as much as digits as its factorization.

201001211100281 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 201001211100281 its reverse (182001112100102), we get a palindrome (383002323200383).

The spelling of 201001211100281 in words is "two hundred one trillion, one billion, two hundred eleven million, one hundred thousand, two hundred eighty-one".