20110000121021 has 4 divisors (see below), whose sum is σ = 20110045760352. Its totient is φ = 20109954481692.

The previous prime is 20110000120993. The next prime is 20110000121039. The reversal of 20110000121021 is 12012100001102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20110000121021 - 2²⁶ = 20109933012157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20110000120993 and 20110000121011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110000121041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22152215 + ... + 23042148.

It is an arithmetic number, because the mean of its divisors is an integer number (5027511440088).

Almost surely, 2^{20110000121021} is an apocalyptic number.

It is an amenable number.

20110000121021 is a deficient number, since it is larger than the sum of its proper divisors (45639331).

20110000121021 is an equidigital number, since it uses as much as digits as its factorization.

20110000121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45639330.

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

Adding to 20110000121021 its reverse (12012100001102), we get a palindrome (32122100122123).

The spelling of 20110000121021 in words is "twenty trillion, one hundred ten billion, one hundred twenty-one thousand, twenty-one".