20111200989041 has 2 divisors, whose sum is σ = 20111200989042. Its totient is φ = 20111200989040.

The previous prime is 20111200989037. The next prime is 20111200989043. The reversal of 20111200989041 is 14098900211102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16476325282816 + 3634875706225 = 4059104^2 + 1906535^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111200989041 - 2² = 20111200989037 is a prime.

Together with 20111200989043, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20111200988986 and 20111200989004.

It is not a weakly prime, because it can be changed into another prime (20111200989043) 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, 10055600494520 + 10055600494521.

It is an arithmetic number, because the mean of its divisors is an integer number (10055600494521).

Almost surely, 2^{20111200989041} is an apocalyptic number.

It is an amenable number.

20111200989041 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111200989041 is an equidigital number, since it uses as much as digits as its factorization.

20111200989041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 38.

The spelling of 20111200989041 in words is "twenty trillion, one hundred eleven billion, two hundred million, nine hundred eighty-nine thousand, forty-one".