20000011212101 has 4 divisors (see below), whose sum is σ = 20003078234604. Its totient is φ = 19996944189600.

The previous prime is 20000011212061. The next prime is 20000011212151. The reversal of 20000011212101 is 10121211000002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16735250083876 + 3264761128225 = 4090874^2 + 1806865^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000011212101 - 2⁶ = 20000011212037 is a prime.

It is a super-2 number, since 2×20000011212101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000011212151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533501470 + ... + 1533514511.

It is an arithmetic number, because the mean of its divisors is an integer number (5000769558651).

Almost surely, 2^{20000011212101} is an apocalyptic number.

It is an amenable number.

20000011212101 is a deficient number, since it is larger than the sum of its proper divisors (3067022503).

20000011212101 is an equidigital number, since it uses as much as digits as its factorization.

20000011212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3067022502.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20000011212101 its reverse (10121211000002), we get a palindrome (30121222212103).

The spelling of 20000011212101 in words is "twenty trillion, eleven million, two hundred twelve thousand, one hundred one".