201210110001 has 6 divisors (see below), whose sum is σ = 290636825570. Its totient is φ = 134140073328.

The previous prime is 201210109999. The next prime is 201210110069. The reversal of 201210110001 is 100011012102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 201197999601 + 12110400 = 448551^2 + 3480^2 .

It is not a de Polignac number, because 201210110001 - 2¹ = 201210109999 is a prime.

It is a super-2 number, since 2×201210110001² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 22356678889 = 201210110001 / (2 + 0 + 1 + 2 + 1 + 0 + 1 + 1 + 0 + 0 + 0 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201210110081) 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 in 5 ways as a sum of consecutive naturals, for example, 11178339436 + ... + 11178339453.

Almost surely, 2^201210110001 is an apocalyptic number.

It is an amenable number.

201210110001 is a deficient number, since it is larger than the sum of its proper divisors (89426715569).

201210110001 is a wasteful number, since it uses less digits than its factorization.

201210110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22356678895 (or 22356678892 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 201210110001 its reverse (100011012102), we get a palindrome (301221122103).

The spelling of 201210110001 in words is "two hundred one billion, two hundred ten million, one hundred ten thousand, one".