201210001 has 16 divisors (see below), whose sum is σ = 211115520. Its totient is φ = 191594880.

The previous prime is 201209999. The next prime is 201210013. The reversal of 201210001 is 100012102.

It is a cyclic number.

It is not a de Polignac number, because 201210001 - 2¹ = 201209999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201210071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539251 + ... + 539623.

It is an arithmetic number, because the mean of its divisors is an integer number (13194720).

Almost surely, 2^201210001 is an apocalyptic number.

It is an amenable number.

201210001 is a deficient number, since it is larger than the sum of its proper divisors (9905519).

201210001 is a wasteful number, since it uses less digits than its factorization.

201210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

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

The square root of 201210001 is about 14184.8511095464. The cubic root of 201210001 is about 585.9805320327.

Adding to 201210001 its reverse (100012102), we get a palindrome (301222103).

The spelling of 201210001 in words is "two hundred one million, two hundred ten thousand, one".