20112020011121 has 2 divisors, whose sum is σ = 20112020011122. Its totient is φ = 20112020011120.

The previous prime is 20112020011051. The next prime is 20112020011141. The reversal of 20112020011121 is 12111002021102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19779366760000 + 332653251121 = 4447400^2 + 576761^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112020011121 - 2³⁸ = 19837142104177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20112020011096 and 20112020011105.

It is not a weakly prime, because it can be changed into another prime (20112020011141) 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 as a sum of consecutive naturals, namely, 10056010005560 + 10056010005561.

It is an arithmetic number, because the mean of its divisors is an integer number (10056010005561).

Almost surely, 2^{20112020011121} is an apocalyptic number.

It is an amenable number.

20112020011121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112020011121 is an equidigital number, since it uses as much as digits as its factorization.

20112020011121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20112020011121 its reverse (12111002021102), we get a palindrome (32223022032223).

The spelling of 20112020011121 in words is "twenty trillion, one hundred twelve billion, twenty million, eleven thousand, one hundred twenty-one".