1001210101 has 2 divisors, whose sum is σ = 1001210102. Its totient is φ = 1001210100.

The previous prime is 1001210083. The next prime is 1001210113. The reversal of 1001210101 is 1010121001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 566487601 + 434722500 = 23801^2 + 20850^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001210101 - 2²¹ = 999112949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001210191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500605050 + 500605051.

It is an arithmetic number, because the mean of its divisors is an integer number (500605051).

Almost surely, 2^1001210101 is an apocalyptic number.

It is an amenable number.

1001210101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001210101 is an equidigital number, since it uses as much as digits as its factorization.

1001210101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1001210101 is about 31641.9041936480. The cubic root of 1001210101 is about 1000.4032044044.

Adding to 1001210101 its reverse (1010121001), we get a palindrome (2011331102).

The spelling of 1001210101 in words is "one billion, one million, two hundred ten thousand, one hundred one".