200101002161 has 2 divisors, whose sum is σ = 200101002162. Its totient is φ = 200101002160.

The previous prime is 200101002137. The next prime is 200101002191. The reversal of 200101002161 is 161200101002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195138645025 + 4962357136 = 441745^2 + 70444^2 .

It is a cyclic number.

It is not a de Polignac number, because 200101002161 - 2³⁰ = 199027260337 is a prime.

It is a super-2 number, since 2×200101002161² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (200101002191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100050501080 + 100050501081.

It is an arithmetic number, because the mean of its divisors is an integer number (100050501081).

Almost surely, 2^200101002161 is an apocalyptic number.

It is an amenable number.

200101002161 is a deficient number, since it is larger than the sum of its proper divisors (1).

200101002161 is an equidigital number, since it uses as much as digits as its factorization.

200101002161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 200101002161 its reverse (161200101002), we get a palindrome (361301103163).

The spelling of 200101002161 in words is "two hundred billion, one hundred one million, two thousand, one hundred sixty-one".