10211210001 has 20 divisors (see below), whose sum is σ = 15745844224. Its totient is φ = 6587875800.

The previous prime is 10211209991. The next prime is 10211210003. The reversal of 10211210001 is 10001211201.

It is a happy number.

It is not a de Polignac number, because 10211210001 - 2⁵ = 10211209969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10211210003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2030785 + ... + 2035806.

Almost surely, 2^10211210001 is an apocalyptic number.

It is an amenable number.

10211210001 is a deficient number, since it is larger than the sum of its proper divisors (5534634223).

10211210001 is an equidigital number, since it uses as much as digits as its factorization.

10211210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066634 (or 4066625 counting only the distinct ones).

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

Adding to 10211210001 its reverse (10001211201), we get a palindrome (20212421202).

The spelling of 10211210001 in words is "ten billion, two hundred eleven million, two hundred ten thousand, one".