10001021002101 has 8 divisors (see below), whose sum is σ = 14816327410560. Its totient is φ = 6667347334716.

The previous prime is 10001021002099. The next prime is 10001021002177. The reversal of 10001021002101 is 10120012010001.

It is a happy number.

It is not a de Polignac number, because 10001021002101 - 2¹ = 10001021002099 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001021002901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185204092605 + ... + 185204092658.

It is an arithmetic number, because the mean of its divisors is an integer number (1852040926320).

Almost surely, 2^{10001021002101} is an apocalyptic number.

It is an amenable number.

10001021002101 is a deficient number, since it is larger than the sum of its proper divisors (4815306408459).

10001021002101 is an equidigital number, since it uses as much as digits as its factorization.

10001021002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370408185272 (or 370408185266 counting only the distinct ones).

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

Adding to 10001021002101 its reverse (10120012010001), we get a palindrome (20121033012102).

The spelling of 10001021002101 in words is "ten trillion, one billion, twenty-one million, two thousand, one hundred one".