200101003181 has 2 divisors, whose sum is σ = 200101003182. Its totient is φ = 200101003180.

The previous prime is 200101003133. The next prime is 200101003247. The reversal of 200101003181 is 181300101002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144164496100 + 55936507081 = 379690^2 + 236509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200101003181 is a prime.

It is a super-2 number, since 2×200101003181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200104003181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100050501590 + 100050501591.

It is an arithmetic number, because the mean of its divisors is an integer number (100050501591).

Almost surely, 2^200101003181 is an apocalyptic number.

It is an amenable number.

200101003181 is a deficient number, since it is larger than the sum of its proper divisors (1).

200101003181 is an equidigital number, since it uses as much as digits as its factorization.

200101003181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 200101003181 its reverse (181300101002), we get a palindrome (381401104183).

The spelling of 200101003181 in words is "two hundred billion, one hundred one million, three thousand, one hundred eighty-one".