200102101 has 2 divisors, whose sum is σ = 200102102. Its totient is φ = 200102100.

The previous prime is 200102057. The next prime is 200102113. The reversal of 200102101 is 101201002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172791025 + 27311076 = 13145^2 + 5226^2 .

It is a cyclic number.

It is not a de Polignac number, because 200102101 - 2¹¹ = 200100053 is a prime.

It is a super-2 number, since 2×200102101² = 80081701649228402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200162101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100051050 + 100051051.

It is an arithmetic number, because the mean of its divisors is an integer number (100051051).

Almost surely, 2^200102101 is an apocalyptic number.

It is an amenable number.

200102101 is a deficient number, since it is larger than the sum of its proper divisors (1).

200102101 is an equidigital number, since it uses as much as digits as its factorization.

200102101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 200102101 is about 14145.7449786146. The cubic root of 200102101 is about 584.9030457581.

Adding to 200102101 its reverse (101201002), we get a palindrome (301303103).

The spelling of 200102101 in words is "two hundred million, one hundred two thousand, one hundred one".