10212020001 has 20 divisors (see below), whose sum is σ = 15264893424. Its totient is φ = 6803595000.

The previous prime is 10212019999. The next prime is 10212020011. The reversal of 10212020001 is 10002021201.

It is not a de Polignac number, because 10212020001 - 2¹ = 10212019999 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10212020011) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 87126 + ... + 167376.

Almost surely, 2^10212020001 is an apocalyptic number.

It is an amenable number.

10212020001 is a deficient number, since it is larger than the sum of its proper divisors (5052873423).

10212020001 is an equidigital number, since it uses as much as digits as its factorization.

10212020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81834 (or 81825 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10212020001 its reverse (10002021201), we get a palindrome (20214041202).

The spelling of 10212020001 in words is "ten billion, two hundred twelve million, twenty thousand, one".