20120001002101 has 96 divisors (see below), whose sum is σ = 28277352367488. Its totient is φ = 14066145999360.

The previous prime is 20120001002093. The next prime is 20120001002149. The reversal of 20120001002101 is 10120010002102.

It is not a de Polignac number, because 20120001002101 - 2³ = 20120001002093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120001002501) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 39483531 + ... + 39989863.

It is an arithmetic number, because the mean of its divisors is an integer number (294555753828).

Almost surely, 2^{20120001002101} is an apocalyptic number.

It is an amenable number.

20120001002101 is a deficient number, since it is larger than the sum of its proper divisors (8157351365387).

20120001002101 is a wasteful number, since it uses less digits than its factorization.

20120001002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506531 (or 506524 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20120001002101 its reverse (10120010002102), we get a palindrome (30240011004203).

Subtracting from 20120001002101 its reverse (10120010002102), we obtain a palindrome (9999990999999).

The spelling of 20120001002101 in words is "twenty trillion, one hundred twenty billion, one million, two thousand, one hundred one".